Ryzen 7 H 255 vs 8745HS: Benchmarks, Gaming & What to Buy

If you are choosing between two mini PCs that look identical except for the CPU name, six questions decide it. Here they are, in the order a buyer asks them.

What Is the Ryzen 7 H 255, and How Is It Different From the 8745HS?

Almost nothing — same cores, same clocks, same graphics.

Both are eight-core, sixteen-thread Zen 4 Hawk Point parts with a 3.8 GHz base clock, up to 4.9 GHz boost, and 16MB of L3 cache. Both pair with the same Radeon 780M integrated graphics: 12 RDNA 3 cores at up to 2600 MHz. AMD lists the H 255 in the Ryzen 200 Series and the 8745HS in the Ryzen 8000 Series, but on paper they describe one class of processor.

Source: AMD processor specifications for the Ryzen 7 H 255 and the matching 8745HS listing on amd.com.

AMD’s listed memory support depends on the processor package. The mini PC maker chooses the installed memory and whether it can be replaced.

That single fact reframes the search. If the two chips are effectively identical, a review that declares one “the winner” is describing noise — and the useful question becomes which complete machine is better built, equipped and priced.

Is the H 255 Faster or Slower in Benchmarks?

Statistically tied: 0.6% apart in PassMark, and each wins a test.

Sources: cpubenchmark.net comparison snapshot dated 12 Nov 2026; Notebookcheck Cinebench 2024 and R23 results for the H 255 and 8745HS. The 14,500 R23 figure is an ACEMAGIC lab run at 54W.

Read the last two rows together, because they carry the whole argument. Notebookcheck’s table shows the same 8745HS scoring anywhere from 12,590 to 16,236 depending on which machine it sits in — a 29% spread from computer to computer. Two of those machines are named: the Alliwava H90 Pro, listed at a 35W sustained power limit, and the Chuwi AuBox, listed at 60W. Those systems also differ in cooling and memory.

Our own 16GB prebuilt scored 14,500 in Cinebench R23 multi-core and 1,686 in single-core, plus 645.8 / 6,508.3 in CPU-Z. That 14,500 is 0.45% off Notebookcheck’s 14,565 average for the 8745HS. Different chip, different test bench, same neighborhood. Cinebench’s minimum test duration was set to Off on our unit, so treat this as one rendering result for this configuration, not a guaranteed score.

Then look at Cinebench 2024, where the H 255 appears 12.4% ahead. That gap is not a chip advantage: it comes from averaging two H 255 machines against four 8745HS machines with different power limits. When the sample is smaller than the variation inside the other sample, the average stops meaning much.

Two Cinebench 2024 numbers get quoted as if they were interchangeable: 813 is Notebookcheck’s four-machine average for the 8745HS, and 943 is CDRInfo’s single 8745HS W1 at 54W. Both are real measurements of the same chip name under different conditions. Neither predicts another unit.

Which Chip Runs Cooler and Quieter?

Sustained 54W, 81.5°C average CPU, 37.6 dB(A) at desk distance.

Spec sheets describe a machine’s first minute; a mini PC lives in its thirtieth. We held the stock USD 489 prebuilt — the soldered-LPDDR5 unit — at the 54W Performance limit for more than 30 minutes on OCCT’s Power test. What came back:

Test unit: ACEMAGIC W1, Ryzen 7 H 255, 16 GB LPDDR5-6400, 512 GB NVMe, Windows 11 Pro, stock cooler and stock paste. Tool: OCCT 12.1.10 Power test, 30+ minutes, Performance profile. Source: ACEMAGIC internal lab.

That is a fan you notice in a silent room and forget once anything is playing.

Two honest limits on that data. The run logged “insufficient test time” for the maximum boost-clock field, so 4.9 GHz remains AMD’s specification rather than a measured sustained figure. And 38°C on the lid is genuinely warm after half an hour at full load — normal for a 128mm chassis dissipating 54W, but relevant if the unit sits under a monitor where your palm lands.

CDRInfo measured the 8745HS version of this chassis and reported 13W at idle, up to 84W under full CPU load, and Silent, Balance and Performance profiles in the BIOS. So the thermal character is set by the chassis and the profile you choose, not by the badge on the CPU.

Do You Get Fewer Frames With One Chip or the Other?

No measurable difference — and the open variable is memory, not silicon.

Both chips carry the same Radeon 780M, so frame rates follow memory and power settings rather than the CPU name. P1 FPS (1st percentile) tells you how far frame rates dip near the slow end of a test, which is why a game can feel choppy even when the average looks fine.

Source: Notebookcheck GTA V 1920×1080 High/On results (Advanced Graphics Off) in the notebookcheck.com comparison table, rows for the GMK NucBox K12, Geekom A8, and Beelink SER9 Pro.

All three average above 60 FPS at 1080p High, with P1 results in the mid-to-high 40s. The 8745HS machine finishes inside the range the two H 255 machines define.

Source: Notebookcheck Cyberpunk 2077 1920×1080 Low preset (FSR off) reviews of the GMK NucBox K12 and Geekom A8. The Beelink SER9 Pro row is in the same K12 review table.

These review units are within 1 FPS of each other at the same preset. All three average well below 60 FPS with FSR off.

For a direct W1 reading, CDRInfo’s 8745HS build (32GB DDR5-5600, Performance mode) averaged 43 FPS in S.T.A.L.K.E.R. 2 at 1080p low with FSR, and ran Total War: WARHAMMER III at roughly 30–45 FPS on lower settings.

What nobody has published yet is a frame-rate run on the fixed-16GB LPDDR5 configuration. Our lab data covers CPU, thermals, and acoustics on that exact prebuilt, not FPS — and LPDDR5-6400 does not behave identically to dual-channel DDR5-5600 under an integrated GPU. If gaming is your main use, that memory question outranks the processor debate; our Radeon 760M vs 780M vs GTX 1650 comparison covers what usually moves these frame rates.

For more titles at 1080p, including esports and lighter AAA settings, see the Radeon 780M gaming benchmarks guide. Indie and casual games are a reasonable starting point on either chip. Recent demanding titles usually need Low settings and upscaling if you want a stable picture.

Which One Can You Upgrade Later?

Neither chip — both are soldered. The machine around them decides it.

ACEMAGIC US shop answer that question in opposite ways:

If you are comparing soldered LPDDR5 with a kit you already own, the difference is not just capacity. Channel layout and memory type change how the 780M behaves, which is the practical point of our LPDDR5 vs DDR5 guide.

Which ACEMAGIC W1 Should You Buy?

Two orderable configurations, both H 255 — decide whether 16GB can stay 16GB.

The ACEMAGIC W1 product page: the H 255 barebone at USD 299 (list USD 459) and the H 255 16GB/512GB prebuilt at USD 489 (list USD 799). 

• You want a working PC today, and 16GB is enough: the USD 489 prebuilt — Windows 11 Pro installed, and the exact unit behind the thermal and benchmark data above.
• A DDR5 kit and an NVMe drive are already in your drawer: the USD 299 barebone — once you confirm its memory layout, because that is the only reason this route exists.

ACEMAGIC W1 AMD Ryzen 7 H 255 Mini PC

Sale 39%

USD 799USD 489

CPU: AMD Ryzen 7 H 255

Graphics: Radeon 780M

Prebuilt: 16GB LPDDR5 / 512GB, Windows 11 Pro

Also available: barebone

Buy Now

A 16GB stick, a 1TB drive and a Windows license run about USD 150 at retail, which is why that barebone is a saving only when some of those parts are already yours. The USD 190 gap between the two W1 prices is the budget you have left for those parts before the barebone costs as much as the prebuilt.

Is 16GB Enough? Measure It on Your Current PC

Ten minutes in Task Manager settles it.

An iGPU mini PC’s 16GB is not a gaming desktop’s 16GB, because the Radeon 780M draws from the same pool as Windows and your apps — coming from a discrete card, subtract two to four gigabytes for what it will claim. Open your usual busy session on the machine you already own: game, browser tabs, voice chat, recorder. Then open Task Manager, go to Performance, and look at Memory.

If Available habitually falls toward a gigabyte or two even after you close optional apps, a fixed-16GB machine will frustrate you within a year. If closing the optional apps clears the pressure, your problem is habits, not capacity.

How do ports differ on the older 8745HS W1?

The Wi-Fi and HDMI differences come from the W1 hardware revision and port design, not from a faster chip. ACEMAGIC lists Wi-Fi 6E for the H 255 W1, and Wi-Fi 6 plus HDMI 2.0 at up to 4K60 for the older 8745HS W1. The H 255 listing gives conflicting HDMI versions under Output and Ports & Buttons. If you need a specific resolution and refresh rate, confirm it for the exact unit before you order.

If you are still comparing whole machines rather than CPU badges, our Best Mini PCs of 2026 guide is the wider shortlist.

Prices and stock were observed November 12, 2026, and are subject to change. Confirm the cart total, the exact CPU, and the memory type before you order.

Conclusion

Two processors one percent apart. Everything that actually differs sits around the chip.

The CPU name is the least useful line on this spec sheet. At similar prices, buy the better-equipped PC. Choose the H 255 machine if it already has the memory and ports you need at a better total price. Choose an 8745HS machine only if that specific PC gives you more usable RAM or an upgrade path you will actually use. Decide with your memory needs, price the exact configuration, and buy the limitation you can live with — because on the W1 prebuilt, that limitation is permanent.

Frequently Asked Questions

Is the Ryzen 7 H 255 the same as the 8745HS?

Same class, near-identical speed: eight Zen 4 cores, Radeon 780M, and benchmarks within about 1% of each other. The spaced and unspaced spellings (H 255, H255) describe one processor. AMD lists them as separate models in different series.

Can I add RAM to the 16GB W1 later?

No. The 16GB LPDDR5-6400 is soldered, and the official specification says “Not Expandable or Upgradeable.” You can add a second NVMe SSD, but storage is not memory. Check the barebone’s memory layout and supported capacity before ordering a kit.

Is the ACEMAGIC W1 good for gaming?

For esports and lighter titles at 1080p, yes. Demanding games need low settings and upscaling — a tested 8745HS W1 averaged 43 FPS in S.T.A.L.K.E.R. 2 at 1080p low with FSR. 

How loud is it under load?

37.6 dB(A) measured beside the 16GB prebuilt after 30+ minutes at 54W — audible in a silent room, inconspicuous with any audio playing.

Should I reserve 4GB for Radeon 780M graphics?

Start with Auto if your BIOS offers it. Try a manual setting if a specific game reports a graphics-memory problem, then test it again. Reserving more memory leaves less for Windows and your apps.

References and Data Sources

• AMD. “Processor Specifications” (Ryzen 7 H 255). amd.com. 
• PassMark Software. “AMD Ryzen 7 H 255 vs AMD Ryzen 7 8745HS.” cpubenchmark.net. 
• Notebookcheck. “AMD Ryzen 7 H 255 Processor Benchmarks and Specs.” notebookcheck.net.