PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

EPYC 4585PX

2025

Why buy it

✅+4.4% higher PassMark.
✅+100% larger total L3 cache (128 MB vs 64 MB).
✅Draws 170W instead of 350W, a 180W reduction.
✅Integrated graphics onboard with AMD Radeon Graphics, while Ryzen Threadripper PRO 9955WX needs a discrete GPU.

Trade-offs

❌Lower PassMark per dollar, at 100.9 vs 157.5 PassMark/$ ($699 MSRP vs $429 MSRP).

Ryzen Threadripper PRO 9955WX

2025

Why buy it

✅Costs $270 less on MSRP ($429 MSRP vs $699 MSRP).
✅Delivers 56.0% more PassMark for each dollar spent, at 157.5 vs 100.9 PassMark/$ ($429 MSRP vs $699 MSRP).
✅357.1% more PCIe lanes (128 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (67,561 vs 70,563).
❌Smaller total L3 cache (64 MB vs 128 MB).
❌105.9% higher power demand at 350W vs 170W.
❌No integrated graphics, while EPYC 4585PX can still boot and troubleshoot without a discrete GPU.

EPYC 4585PX

2025

Ryzen Threadripper PRO 9955WX

2025

Why buy it

✅+4.4% higher PassMark.
✅+100% larger total L3 cache (128 MB vs 64 MB).
✅Draws 170W instead of 350W, a 180W reduction.
✅Integrated graphics onboard with AMD Radeon Graphics, while Ryzen Threadripper PRO 9955WX needs a discrete GPU.

Why buy it

✅Costs $270 less on MSRP ($429 MSRP vs $699 MSRP).
✅Delivers 56.0% more PassMark for each dollar spent, at 157.5 vs 100.9 PassMark/$ ($429 MSRP vs $699 MSRP).
✅357.1% more PCIe lanes (128 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 100.9 vs 157.5 PassMark/$ ($699 MSRP vs $429 MSRP).

Trade-offs

❌Lower PassMark (67,561 vs 70,563).
❌Smaller total L3 cache (64 MB vs 128 MB).
❌105.9% higher power demand at 350W vs 170W.
❌No integrated graphics, while EPYC 4585PX can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is EPYC 4585PX better than Ryzen Threadripper PRO 9955WX?

It depends on what matters more to you. For gaming, Ryzen Threadripper PRO 9955WX is ahead with a 1.2% average FPS lead across 4 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, EPYC 4585PX pulls ahead with 4.4% better PassMark. EPYC 4585PX also has the bigger cache pool with 100% larger total L3 cache (128 MB vs 64 MB).

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, EPYC 4585PX is the better fit. You are getting 4.4% better PassMark, backed by 16 cores and 32 threads. It also carries the larger cache pool with 100% larger total L3 cache (128 MB vs 64 MB).

Which one is the smarter buy today, not just the cheaper CPU?

EPYC 4585PX is still the faster CPU overall, but Ryzen Threadripper PRO 9955WX makes more sense if price matters more than absolute performance. EPYC 4585PX is 62.9% more expensive on MSRP at $699 MSRP versus $429 MSRP, and it gives you 4.4% better PassMark. The trade-off is that Ryzen Threadripper PRO 9955WX is still the better pure gaming CPU with a 1.2% average FPS lead across 4 shared CPU game tests in our data. Ryzen Threadripper PRO 9955WX is also 56.0% better value on MSRP (157.5 vs 100.9 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

Which one is more future-proof for 2026 and beyond?

EPYC 4585PX is the more future-proof choice for 2026 and beyond. You are getting 100% larger total L3 cache (128 MB vs 64 MB) and more multi-core headroom with 16 cores / 32 threads instead of 16/32. That extra cache should hold up really well in CPU-limited games and high-refresh builds.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

EPYC 4585PX Benchmark Check

Ryzen Threadripper PRO 9955WX Benchmark Check

Path of Exile 2

Preset	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
1080p
low	300 FPS	297 FPS
medium	274 FPS	270 FPS
high	227 FPS	223 FPS
ultra	191 FPS	188 FPS
1440p
low	276 FPS	273 FPS
medium	228 FPS	224 FPS
high	177 FPS	174 FPS
ultra	156 FPS	153 FPS
4K
low	190 FPS	187 FPS
medium	156 FPS	154 FPS
high	120 FPS	118 FPS
ultra	106 FPS	104 FPS

Open EPYC 4585PX Open Ryzen Threadripper PRO 9955WX

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
1080p
low	722 FPS	781 FPS
medium	615 FPS	642 FPS
high	457 FPS	476 FPS
ultra	385 FPS	402 FPS
1440p
low	591 FPS	641 FPS
medium	524 FPS	546 FPS
high	405 FPS	420 FPS
ultra	319 FPS	326 FPS
4K
low	332 FPS	360 FPS
medium	299 FPS	310 FPS
high	262 FPS	271 FPS
ultra	224 FPS	228 FPS

Open EPYC 4585PX Open Ryzen Threadripper PRO 9955WX

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
1080p
low	893 FPS	888 FPS
medium	725 FPS	705 FPS
high	652 FPS	622 FPS
ultra	560 FPS	534 FPS
1440p
low	720 FPS	713 FPS
medium	585 FPS	567 FPS
high	514 FPS	489 FPS
ultra	437 FPS	414 FPS
4K
low	516 FPS	507 FPS
medium	431 FPS	418 FPS
high	387 FPS	375 FPS
ultra	322 FPS	315 FPS

Open EPYC 4585PX Open Ryzen Threadripper PRO 9955WX

League of Legends

League of Legends

Valorant

Preset	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
1080p
low	1116 FPS	1106 FPS
medium	1001 FPS	991 FPS
high	878 FPS	867 FPS
ultra	792 FPS	781 FPS
1440p
low	872 FPS	860 FPS
medium	766 FPS	759 FPS
high	673 FPS	664 FPS
ultra	584 FPS	576 FPS
4K
low	637 FPS	632 FPS
medium	566 FPS	562 FPS
high	503 FPS	496 FPS
ultra	435 FPS	429 FPS

Open EPYC 4585PX Open Ryzen Threadripper PRO 9955WX

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 4585PX and Ryzen Threadripper PRO 9955WX

EPYC 4585PX

The EPYC 4585PX is manufactured by AMD. It was released in 13 May 2025 (less than a year ago). It is based on the Grado (2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.3 GHz, with boost up to 5.7 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 170 Watt. Memory support: DDR5. Passmark benchmark score: 70,563 points. Launch price was $699.

Ryzen Threadripper PRO 9955WX

The Ryzen Threadripper PRO 9955WX is manufactured by AMD. It was released in 23 July 2025 (less than a year ago). It is based on the Shimada Peak (2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: sTR5. Thermal design power (TDP): 350 Watt. Memory support: DDR5. Passmark benchmark score: 67,561 points. Launch price was $1,649.

⚡

Processing Power

Both the EPYC 4585PX and Ryzen Threadripper PRO 9955WX share an identical 16-core/32-thread configuration. Boost clocks reach 5.7 GHz on the EPYC 4585PX versus 5.4 GHz on the Ryzen Threadripper PRO 9955WX — a 5.4% clock advantage for the EPYC 4585PX (base: 4.3 GHz vs 4.5 GHz). The EPYC 4585PX uses the Grado (2025) architecture (4 nm), while the Ryzen Threadripper PRO 9955WX uses Shimada Peak (2025) (4 nm). In PassMark, the EPYC 4585PX scores 70,563 against the Ryzen Threadripper PRO 9955WX's 67,561 — a 4.3% lead for the EPYC 4585PX. L3 cache: 128 MB (total) on the EPYC 4585PX vs 64 MB (total) on the Ryzen Threadripper PRO 9955WX.

Feature	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
Cores / Threads	16 / 32	16 / 32
Boost Clock	5.7 GHz+6%	5.4 GHz
Base Clock	4.3 GHz	4.5 GHz+5%
L3 Cache	128 MB (total)+100%	64 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	4 nm
Architecture	Grado (2025)	Shimada Peak (2025)
PassMark	70,563+4%	67,561
Cinebench R23 Multi	—	40,000
Geekbench 6 Single	—	3,016
Geekbench 6 Multi	—	23,596

🧠

Memory & Platform

The EPYC 4585PX uses the AM5 socket (PCIe 4.0), while the Ryzen Threadripper PRO 9955WX uses sTR5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5600 on the EPYC 4585PX versus DDR5-6400 on the Ryzen Threadripper PRO 9955WX — the EPYC 4585PX supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen Threadripper PRO 9955WX supports up to 2048 GB of RAM compared to 256 — 155.6% more capacity for professional workloads. Memory channels: 2 (EPYC 4585PX) vs 8 (Ryzen Threadripper PRO 9955WX). PCIe lanes: 28 (EPYC 4585PX) vs 128 (Ryzen Threadripper PRO 9955WX) — the Ryzen Threadripper PRO 9955WX offers 100 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM5 (EPYC 4585PX) and WRX90 (Ryzen Threadripper PRO 9955WX).

Feature	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
Socket	AM5	sTR5
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	5600+111900%	DDR5-6400
Max RAM Capacity	256	2048 GB+838860700%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	28	128+357%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, AMD-V (EPYC 4585PX) vs true (Ryzen Threadripper PRO 9955WX). The EPYC 4585PX includes integrated graphics (AMD Radeon Graphics), while the Ryzen Threadripper PRO 9955WX requires a dedicated GPU. Direct competitor: EPYC 4585PX rivals Core Ultra 9 285K; Ryzen Threadripper PRO 9955WX rivals Xeon w7-3555.

Feature	EPYC 4585PX	Ryzen Threadripper PRO 9955WX
Integrated GPU	Yes	No
IGPU Model	AMD Radeon Graphics	None
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	VT-x, VT-d, AMD-V	true

💰

Value Analysis

The EPYC 4585PX launched at $699 MSRP, while the Ryzen Threadripper PRO 9955WX debuted at $429. On MSRP ($699 vs $429), the Ryzen Threadripper PRO 9955WX is $270 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 4585PX delivers 100.9 pts/$ vs 157.5 pts/$ for the Ryzen Threadripper PRO 9955WX — making the Ryzen Threadripper PRO 9955WX the 43.8% better value option.