Best SFX Power Supply: Apevia SFX-AP500W Leads

The best sfx power supply for graphic designers is the Apevia SFX-AP500W, which packs 500W into a 2.5 x 4.92 x 3.94 in body that drops into any standard 125mm SFX bay. If your build runs a current-generation graphics card, the Lian Li SP750 V2 Gold moves you to 750W and a 10-year warranty instead. Get this choice wrong and the failure is not dramatic. It is a machine that reboots mid-export, a fan that whines under a two-hour render, and a rebuild you have to do twice.

Best sfx power supply for graphic designers at a glance

How I screened these seven listings

I started with the published data, not the marketing. For every unit in this category I lined up four things: wattage, physical dimensions, warranty length, and whether the cables detach. Those four decide whether a unit fits, whether it powers the parts you own, and whether you get help when it dies.

Here is the screen, in order:

1. Form factor first. Every pick here is SFX or SFX-L, so it targets ITX and small-form-factor cases rather than a full tower.
2. Published dimensions second. Six of the seven list them. That figure is the difference between a build that closes and a build that does not.
3. Wattage third. The set spans 400W to 850W, which is a genuine spread rather than seven near-identical units.
4. Warranty fourth. Four listings publish a decade of coverage. Two publish a single year. That gap is wider than any efficiency difference in the group.

What got cut: units without a published wattage figure, and units whose listings gave no dimensions at all. In a category where a 125mm bay is the whole constraint, an unstated depth is a dealbreaker rather than a footnote.

The word "designers" in the search does not map to anything in these listings. No manufacturer here claims colour accuracy, monitor output, or anything specific to design software. I've treated it as a description of the workload, not a feature to verify.

Does a design workstation really need an SFX power supply?

Probably not, and that is worth saying up front. SFX exists to fit a small case. If your tower has room for a standard ATX unit, you have more choice and usually more capacity for the same outlay.

The reason to pick the best sfx power supply for graphic designers is space. A shared studio desk, a shelf under a monitor arm, a machine that travels between an office and a home setup. Those are the situations where a 125mm-deep unit earns its place.

The workload argument is thinner than it sounds. Illustrator, InDesign and Photoshop lean on the CPU and system memory more than on sustained GPU draw. What actually pushes an SFF power supply hard is video export, 3D rendering, and a modern graphics card spiking under load. If your day is print layout and photo retouching, a 500W unit is not a compromise. It is the right size.

Two things do change with heavy 3D and motion work:

• Sustained load, meaning the unit runs near its rated output for an hour rather than a minute.
• Transient spikes from a current GPU, which is what the ATX 3.0 and 3.1 claims in this set are addressing.

1. Apevia SFX-AP500W Mini ITX Solution/Micro ATX/SFX 500W — Best overall

Five hundred watts in a bay-standard 2.5 x 4.92 x 3.94 in body, with a connector list that covers a real build rather than a stripped one.

Best for: a compact ITX design box with a modest GPU Skip it if: you need modular cables or a long warranty

This is the pick I'd start with because it solves the problem most SFF builders actually have. The dimensions match the SFX standard exactly, and Apevia lists them twice, once in inches and once as 125mm x 100mm x 63.5mm. No guessing at clearance.

The connector spread is the real argument. Apevia lists one 20+4-pin main power lead, one 8-pin 12V that splits into 4+4, one 6/8-pin PCIe, three SATA and two 4-pin Molex. That covers a motherboard, a CPU, a graphics card, two or three drives and a fan hub. The 4+4 split matters on older ITX boards that only take a 4-pin CPU feed.

At 500W it is the second-cheapest of the seven, and it sits above the 400W Apevia by a full 100W for a small step up. Two sellers list it, which is one more than most of this set.

The trade-off is honest. Cables are fixed, so everything you do not use gets stuffed behind the drive cage. The warranty runs one year against a decade on four other picks here. And Apevia's own listing warns the unit will not power on from the wall alone, which trips up first-time builders who expect a paperclip test to work.

Pros:

• 500W in a standard 125mm SFX footprint
• Dimensions published in both inches and millimetres
• 8-pin CPU lead splits to 4+4 for older ITX boards
• Three SATA plus two Molex connectors
• Second-cheapest of the seven picks

Cons:

• Fixed cables clutter a small case
• One-year warranty against 10 years on four picks
• No published efficiency certification
• No 12V-2x6 or 16-pin GPU connector

2. Lian Li SP750 V2 Gold 750W Power Supply-SFX Form Factor — Runner-up

The 750W unit that stays inside a true SFX depth of 2.5 in, with a native 12V-2x6 lead and a 10-year warranty.

Best for: a white SFF workstation running a current GPU Skip it if: you want the cheapest way to power a light build

If your build has a current graphics card in it, this is the pick that changes. The SP750 V2 delivers 750W at 3.92 lb inside 3.94 x 4.92 x 2.5 in, which is standard SFX rather than the deeper SFX-L. That combination is the whole reason it sits second.

Lian Li states ATX 3.1 compliance and a native 12V-2x6 connector, described as a two-tone cable with visual cues so you can see when it is properly seated. That detail exists because badly seated 16-pin connectors have been the failure story of the last GPU generation. The listing also claims an upgraded 5VSB standby rail with more current capacity than the previous version.

Cooling comes from a 92mm fluid dynamic bearing fan, which Lian Li describes as quiet. Cables are fully modular, so an ITX case only carries what the build needs. Warranty is 10 years, matching the longest in this group.

Two honest losses. It is the second-most expensive pick here, and it only comes in white in this listing, which looks wrong in a black case with a tinted panel. Only one seller stocks it. It also released in 2025, so it is the newer of the two 750W options and has less track record behind it than the ASUS.

Pros:

• 750W inside a true 2.5 in SFX depth
• Native 12V-2x6 cable with seating cues
• 10-year warranty
• 92mm fluid dynamic bearing fan
• Fully modular cabling for tight cases

Cons:

• Second-highest price position in this set
• White only, which clashes in a black build
• Only one seller lists it
• Lighter track record than older 750W units

3. GOLDEN FIELD 550W SFX Power Supply — Best for pros

A 550W fully modular unit at 1.87 lb, the lightest here, with a claimed 93% efficiency at half load.

Best for: a mid-power build where efficiency and modularity matter Skip it if: your GPU needs a bundled 12V-2x6 cable

This one hits a sweet spot for a working machine that is not chasing the top of the GPU stack. GOLDEN FIELD lists 550W in a 2.52 x 4.92 x 3.94 in body weighing 1.87 lb, making it the lightest pick in this comparison by a clear margin over the 3.7 lb and 3.92 lb premium units.

The efficiency claim is the headline. GOLDEN FIELD says the unit is 80 Plus Platinum rated and delivers up to 93% efficiency at 50% load on 115V. Only two picks here claim Platinum. The listing also claims 100% Japanese capacitors and a pure copper transformer, and describes a low-noise PWM fan. Those are manufacturer claims rather than measured results, so treat them as the case being made rather than the case being proven.

Cables are fully modular. The listing states ATX 3.1 and PCIe 5.1 support with a native 12V-2x6 connector on the unit.

Here is the catch, and it is buried in GOLDEN FIELD's own bullet: the 550W model does not ship with the 12V-2x6 cable. The socket is there, the cable is not. That is a specific, checkable limitation, and it means a 16-pin GPU needs a separate cable you have to source yourself. The listing publishes no warranty length in its specifications either, and only one seller stocks it.

Pros:

• Lightest pick here at 1.87 lb
• Claimed 93% efficiency at 50% load
• Fully modular cabling
• Platinum efficiency claim at an entry price position

Cons:

• 12V-2x6 cable not included with the 550W model
• No warranty length in the published specifications
• Only one seller lists it
• Efficiency and capacitor claims are unverified manufacturer copy

4. ASUS ROG Loki SFX-L 750W Platinum — Best premium

Seven hundred and fifty watts with a 120mm fan and a certified noise figure below 25 dB, in a deeper SFX-L body.

Best for: an SFX-L case with room for a 120mm fan Skip it if: your case only clears a 100mm-deep PSU

Noise is the reason to pay for this one. ASUS states Lambda A certification with noise levels below 25 dB, which is the only hard acoustic figure published anywhere in this set. That comes from the 120mm PWM Axial-tech fan, larger than the 92mm units elsewhere here, moving the same air at lower speed.

The dimensions tell you the cost of that fan. At 2.5 x 4.9 x 4.9 in, the Loki is SFX-L, not SFX. It is roughly an inch deeper than the standard 125mm units in this group, and it is the heaviest pick at 4 lb. Check your case specification before you commit, because many ITX enclosures take SFX only.

Everything else is the top of this set. ASUS lists 80 PLUS Platinum with up to 92% efficiency, ATX 3.0 compliance, and a bundled 16-pin PCIe cable rated to carry 600W. Heatsinks cover the critical components. The warranty splits into 10 years on the core unit and 3 years on the RGB LEDs, the only pick here that separates the two.

It is the most expensive pick in this comparison, and the case for it is acoustics plus fit. If your case takes SFX-L and you render with headphones off, that is a real argument. If not, the Lian Li gives you the same 750W in a smaller box.

Pros:

• Certified noise level below 25 dB
• 120mm PWM fan, largest in this set
• Bundled 16-pin cable rated to 600W
• 10-year core warranty
• Platinum efficiency, up to 92%

Cons:

• SFX-L depth of 4.9 in will not fit many ITX cases
• Heaviest pick at 4 lb
• Highest price position of the seven
• RGB LED coverage drops to 3 years

5. GAMEMAX SFX Power Supply 850W — Best for heavy use

The joint-highest output here at 850W, fully modular, at a middle price position rather than a premium one.

Best for: long renders on a power-hungry GPU Skip it if: you need published dimensions before you buy

If your workload is video export or 3D rendering that runs for hours, headroom matters more than efficiency percentages. This is the only pick in the set that pairs 850W with a mid-range price position, and that combination is why it earns a place.

GAMEMAX lists 80 Plus Gold certification with an APFC, LLC and DC-DC design, claiming 90% efficiency or better under typical loads. The listing also claims main Japanese 105°C capacitors, a 12VHPWR 16-pin connector rated to deliver 600W, and an ultra-quiet fluid dynamic bearing fan. Protection coverage is listed as OVP, UVP, OPP, SCP, OCP and OTP, which is the full spread.

Cables are fully modular. Colour is black, which suits most SFF cases better than the white Lian Li.

The problem is what the listing does not publish, and it is a real one for an SFF build. There are no dimensions in the specifications, and no weight. In a category where the entire question is whether the unit clears your bay, that omission forces you to measure your case and check the manufacturer's own documentation before ordering. No warranty length appears in the specifications either, unlike the four picks here that publish 10 years. Only one seller stocks it.

Pros:

• 850W at a mid-range price position
• Fully modular black cabling
• 12VHPWR 16-pin connector rated to 600W
• Full protection list including OTP and OCP
• Claimed 90% or better efficiency under typical load

Cons:

• No published dimensions, a serious gap for SFF
• No published weight
• No warranty length in the specifications
• Only one seller lists it

6. Super Flower Combat SFX FG 850W Power Supply — Best for beginners

All-ribbon modular cabling in a 2.5 x 3.93 x 4.92 in body, which makes a first SFF build far easier to route.

Best for: a first SFF build that wants ribbon cables Skip it if: you are shopping the cheaper end of this set

Cable routing is the part of an ITX build that defeats people, and this is the pick that addresses it directly. Super Flower states a full modular design using all ribbon cables to maximise flexibility. Flat cables fold into gaps that round bundles will not, which matters enormously when the space behind your motherboard is a few millimetres deep.

Output is 850W, joint-highest here with the GAMEMAX. The unit weighs 3.7 lb and measures 2.5 x 3.93 x 4.92 in, which is standard SFX depth rather than SFX-L. Warranty is a published 10 years.

Super Flower lists Cybenetics Gold certification rather than 80 Plus, along with ATX 3.1 compliance, PCIe 5.1 readiness, Modern Standby compatibility and full-range auto voltage detection from 100V to 240V with active PFC. That voltage range is genuinely useful if you move a machine between countries.

Two things temper the recommendation. It carries a 2026 release date, making it the newest listing here with the least history behind it. And the specifications say nothing about the fan: no size, no bearing type, no noise figure, where three other picks name theirs. For a beginner worried about a whining unit under load, that silence is unhelpful. It also sits at a premium price position for the same 850W the mid-priced GAMEMAX offers.

Pros:

• All-ribbon modular cables, easiest to route here
• 850W in standard SFX depth
• 10-year published warranty
• Full-range 100V to 240V auto voltage detection
• ATX 3.1 and PCIe 5.1 compliant

Cons:

• No fan size, bearing type or noise figure published
• Premium price position for the same 850W as a mid-priced pick
• Newest listing in the set, least track record
• Only one seller lists it

7. APEVIA SFX-AP400W Mini ITX Solution / Micro ATX / SFX 400W — Best budget pick

The cheapest of the seven, with a published output table down to the amp on every rail.

Best for: a second machine or a proofing station Skip it if: you plan to add a discrete GPU later

Not every machine on a design desk is the main machine. If you need to power a small proofing box, a file server, or an old ITX build that runs integrated graphics, this is the cheapest route in the set.

Apevia publishes the full output table, which none of the premium picks here do: +3.3V at 12A, +5V at 12A, +12V at 28A, -12V at 0.3A and +5Vsb at 2.5A. That 28A figure on the 12V rail is the number that tells you what the unit will actually carry, and I'd rather have it than a certification badge. Dimensions are 2.5 x 5 x 4 in, weight 2.03 lb, cooling from a single 80mm thermally sensing fan with all cables sleeved.

Connectors cover a 20+4-pin main lead, a 4-pin 12V CPU feed, one 6/8-pin PCIe, two SATA, two Molex and a 4-pin floppy header.

The limits are clear. At 400W it is the lowest output here, and the CPU feed is 4-pin only rather than the 8-pin the AP500W offers, which rules out boards that want a full 8-pin. Cables are fixed. The 80mm fan is the smallest in this group, and small fans spin faster to move the same air. The warranty runs one year. For a hundred watts more and a modest step up in outlay, the AP500W is the better buy.

Pros:

• Cheapest pick of the seven
• Full output table published, 28A on the 12V rail
• Lightest of the fixed-cable units at 2.03 lb
• Sleeved cables and thermally sensing fan

Cons:

• Lowest output here at 400W
• 4-pin CPU connector only, no 8-pin option
• 80mm fan, smallest in this set
• One-year warranty and fixed cabling

SFX or SFX-L: which fits your case?

This is the question that decides the purchase, and most guides skip it in favour of wattage. Get it wrong and the unit does not go in.

Standard SFX is 100 x 125 x 63.5mm. Five picks here match that: both Apevias, the GOLDEN FIELD, the Lian Li and the Super Flower, all listing a 2.5 in height and roughly 3.94 x 4.92 in on the other two axes.

SFX-L is deeper. The ASUS ROG Loki measures 2.5 x 4.9 x 4.9 in, adding about an inch to accommodate its 120mm fan. That extra inch is why it can publish a sub-25 dB noise figure, and it is also why it will not fit a case rated for SFX only.

• Case says SFX only: five of these seven fit. The Loki does not.
• Case says SFX-L: all seven fit, and an SFX unit leaves a gap.
• Case says nothing: measure the bay depth yourself before ordering.

The GAMEMAX is the awkward one. Its listing publishes no dimensions at all, so you cannot confirm fit from the page. If your clearance is tight, that alone moves it down your list regardless of its 850W output.

How much wattage does a colour-critical build actually pull?

Wattage is where people overspend. The honest answer is that the graphics card sets the number, and everything else is rounding.

A build with integrated graphics or a low-power discrete card sits comfortably inside the 400W of the APEVIA SFX-AP400W, whose 12V rail is rated at 28A. A mid-range card and a modern CPU is where 500W to 550W lands, which is exactly the band the Apevia SFX-AP500W and the GOLDEN FIELD occupy.

Above that, two things push you higher. Current graphics cards draw transient spikes well above their nominal rating, which is what the ATX 3.0 and ATX 3.1 claims across this set are designed to absorb. And sustained rendering keeps the unit near its ceiling for hours rather than seconds, which generates heat and spins fans faster.

That is where 750W and 850W earn their place. The Lian Li and the ASUS sit at 750W with 16-pin connectors rated to 600W. The GAMEMAX and Super Flower reach 850W.

Buying two tiers above your actual draw does not make a machine faster. It just means the unit runs at a lower percentage of its rating, which is quieter and cooler but not free.

What more money buys in this set

The spread here is instructive, because the extra outlay does not buy watts in a straight line.

At the cheaper end sit both Apevias and the GOLDEN FIELD. What you get is capacity in the right box. What you give up is warranty length on the Apevias, at one year each, and detachable cables on both of them.

The middle holds the GAMEMAX at 850W, which is the best watts-per-outlay ratio in the group by a wide margin. What you give up is published dimensions and a stated warranty term.

At the top, three picks share a premium position: the Super Flower, the Lian Li and the ASUS. Here is what the money actually buys across them:

• A published 10-year warranty, which the cheaper picks either shorten to one year or omit.
• A named fan with a stated bearing type, and in the ASUS a certified noise figure.
• Bundled 16-pin cabling rather than a socket you have to supply a cable for.
• Ribbon or fully modular cabling that makes a cramped case buildable.

Notice what it does not buy: more watts. The 850W Super Flower and the 750W Lian Li cost more than the 850W GAMEMAX. You are paying for documentation, acoustics and support, not output.

What these listings do not tell you

Reading seven of these pages side by side, the gaps are as revealing as the specifications.

No listing here mentions design software, colour work or monitor output. The search term includes "graphic designers", but nothing in this data supports a claim that any unit is built for that work. A power supply is agnostic about what you run. Treat the workload as your own judgment call, not a feature to look for.

Efficiency certifications come from three different schemes. Four picks cite 80 Plus, at Gold or Platinum. The Super Flower cites Cybenetics Gold instead. The two Apevias cite nothing. Those are not directly interchangeable figures.

Fan details are inconsistent. The ASUS names a 120mm PWM unit, the Lian Li a 92mm FDB, the APEVIA an 80mm thermal-sensing fan. The Super Flower and GAMEMAX describe their fans in adjectives rather than sizes.

Only one seller lists six of the seven. The Apevia SFX-AP500W is the exception, with two. That is worth knowing when you compare.

Two listings publish no warranty length in their specifications, the GOLDEN FIELD and the GAMEMAX, even though the GOLDEN FIELD's title mentions a decade of coverage. Title copy and specification fields disagreeing is common, and the specification field is the one I'd trust less to be complete.

The verdict

If your build runs integrated or modest graphics and lives in a standard SFX bay, the Apevia SFX-AP500W is the pick. Its 500W lands where a layout and retouching workstation actually draws, its 2.5 x 4.92 x 3.94 in body matches the 125mm standard exactly, and its connector list covers a motherboard, a CPU, a card and three drives. It is the second-cheapest of the seven, and two sellers list it.

If your build has a current-generation graphics card in it, the Lian Li SP750 V2 Gold takes over. Its exact advantage is fitting 750W and a native, colour-cued 12V-2x6 connector into the same 2.5 in SFX depth, with a 10-year warranty and a 92mm fluid dynamic bearing fan behind it. The Apevia has no 16-pin lead at all, which is the line that decides it.

The cutoff is the GPU power connector. If the card you own or plan to buy needs a 16-pin 12V-2x6 feed, you need 750W or more and a bundled cable, and the Apevia is out. If it takes a 6-pin or 8-pin PCIe lead, the Apevia covers it and the extra outlay buys you documentation rather than capability. Sustained rendering all day is the one case for going higher still, and the GAMEMAX 850W is the cheapest way to get there.

FAQ

Is the best sfx power supply for graphic designers worth paying premium for?

The best sfx power supply for graphic designers is worth a premium only when you get something concrete for it. Here that means a 10-year warranty, a named fan with a stated bearing type, or a bundled 16-pin cable. The ASUS ROG Loki adds a certified sub-25 dB noise figure. Paying more for the same 850W the mid-priced GAMEMAX offers buys documentation, not capability.

Which is better value, the Apevia SFX-AP500W or the SFX-AP400W?

Better value goes to the SFX-AP500W. It adds 100W over the 400W model and upgrades the CPU feed from a 4-pin to an 8-pin that splits into 4+4, which fits far more motherboards. It also gains a third SATA connector. The AP400W is the cheapest pick here and makes sense for a light second machine, but the step up is small for what it adds.

Will an SFX power supply fit my ITX case?

An SFX power supply fits any bay rated for the 100 x 125 x 63.5mm standard, which is a 2.5 in height. Five picks here match that. The ASUS ROG Loki is SFX-L at 2.5 x 4.9 x 4.9 in and needs a case that specifically supports the deeper size. The GAMEMAX publishes no dimensions at all, so measure your clearance before ordering it.

Do I need a 12V-2x6 connector for design work?

You need a 12V-2x6 connector only if your graphics card has that 16-pin socket. Current-generation cards do; older ones use 6-pin or 8-pin PCIe leads instead. The Lian Li, ASUS and GAMEMAX list 16-pin cables rated to 600W. The GOLDEN FIELD 550W has the socket but states the cable is not included, which you would have to source separately.

What is the biggest mistake when buying an SFX power supply?

The biggest mistake is choosing on wattage before confirming physical fit. An 850W unit that does not clear your case bay is useless, and SFX-L is roughly an inch deeper than SFX. The second mistake is buying fixed-cable units for a cramped build. Both Apevias here have non-detachable cables, and unused leads have nowhere to go in an ITX enclosure.

Measure your case bay depth first, then check what connector your graphics card needs, then pick. In that order, the decision takes ten minutes. For most compact design machines the Apevia SFX-AP500W is the sensible default, because 500W matches what layout and retouching work actually draws and the dimensions are published twice over so fit is never a guess. Move up to the Lian Li SP750 V2 Gold the moment a 16-pin card enters the plan, and up to the GAMEMAX 850W if your days end in long renders rather than exports.

Last updated: September 14, 2026. Product availability re-checked.

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