AMD Ryzen 7 5800XT vs AMD Ryzen 7 PRO 5755GE Comparison

The AMD Ryzen 7 5800XT and AMD Ryzen 7 PRO 5755GE are both 8-core, 16-thread Zen 3 parts on the AM4 socket, but the benchmark data shows a complete sweep: the 5800XT wins all 17 head-to-head comparisons, with the PRO 5755GE taking zero. The 5800XT’s average benchmark score of 29,879 puts it 0.8% above the PRO 5755GE’s 29,656, though both sit at the 81st percentile among all CPUs. The real story is not the average, but the magnitude of the deltas in specific workloads, which range from a modest 5.4% in single-threaded PassMark to a staggering 138% in prime number finding. The PRO 5755GE is not a performance competitor; it is a low-power, integrated-graphics alternative, and the data reflects that positioning clearly.

Where Each One Wins

The 5800XT wins every single benchmark in the head-to-head list, making a use-case split almost unnecessary. However, the size of the wins varies dramatically, which defines the workloads where the 5800XT is essential versus merely preferable. In Cinebench R23 multi-core, the 5800XT scores 23,794 against 17,759, a 34% advantage. This is a massive gap for rendering and CPU-bound productivity, where the 5800XT’s higher boost clock and larger cache pay off. In single-core Cinebench R23, the 5800XT’s 3,359 versus 2,507 is also a 34% lead, meaning even lightly-threaded tasks like web browsing or office apps will feel snappier on the 5800XT.

The most extreme win is in PassMark’s find prime numbers test, where the 5800XT scores 119 versus 50, a 138% advantage. This suggests the 5800XT is dramatically better at integer-heavy, branch-predictable math workloads. The 5800XT also shines in extended instructions (42.5% ahead), physics (61.1% ahead), and data compression (39.2% ahead). The only close contest is PassMark single-thread, where the 5800XT’s 3,535 beats 3,353 by just 5.4%. For the PRO 5755GE, its only potential “win” is its 35W TDP versus the 5800XT’s 105W, making it the choice for fanless or ultra-compact builds where power draw is the primary constraint — though the performance cost is steep. There is no benchmark where the PRO 5755GE leads.

Architecture Differences

Both chips are built on TSMC’s 7nm process with Zen 3 cores, but the similarity ends there. The 5800XT uses the Vermeer chiplet design with a 74 mm² die size and 4,150 million transistors, while the PRO 5755GE uses the Cezanne monolithic die at 180 mm² and 10,700 million transistors. The larger Cezanne die integrates the Radeon Vega 8 graphics, which the 5800XT lacks entirely. This is the key architectural trade-off: the PRO 5755GE gives you an iGPU for basic display output and media playback, while the 5800XT requires a discrete graphics card.

Cache is another major divider. The 5800XT has 32 MB of shared L3 cache, while the PRO 5755GE is limited to 16 MB. This explains the 5800XT’s lead in data compression and extended instruction tests, where larger caches reduce memory access stalls. Both chips have 64 KB L1 and 512 KB L2 per core, but the halved L3 is a significant handicap for the PRO 5755GE. Clock speeds reinforce the gap: the 5800XT runs at 3.80 GHz base and 4.80 GHz boost, versus 3.20 GHz base and 4.60 GHz boost for the PRO 5755GE. The 5800XT also supports PCIe Gen 4 with 20 lanes, whereas the PRO 5755GE is limited to PCIe Gen 3 with 16 lanes. Memory support is identical (DDR4 dual-channel, 51.2 GB/s bandwidth), but the 5800XT supports ECC memory while the PRO 5755GE does not. The 5800XT has an unlocked multiplier for overclocking; the PRO 5755GE is locked.

The Verdict

The data dictates a clear choice for performance users: the AMD Ryzen 7 5800XT. It wins every benchmark, with advantages ranging from 5.4% to 138%. For multi-threaded rendering, the 34% lead in Cinebench R23 multi-core (23,794 vs 17,759) is decisive. For single-thread responsiveness, the 34% lead in R23 single-core (3,359 vs 2,507) is equally clear. If you need raw compute, the 5800XT is the only option here. It also offers ECC memory support and PCIe Gen 4, making it more suitable for workstation-class tasks like data integrity and fast NVMe storage.

The AMD Ryzen 7 PRO 5755GE is for a different buyer entirely. Its 35W TDP is one-third of the 5800XT’s 105W, making it the choice for small-form-factor or fanless builds where heat and power are the primary concerns. It also includes Radeon Vega 8 integrated graphics, which is absent on the 5800XT, so for a basic office PC without a discrete GPU, the PRO 5755GE is functional out of the box. However, the performance sacrifice is enormous: 34% slower in Cinebench, 39% slower in data compression, and 138% slower in prime number tests. The PRO 5755GE also lacks ECC memory support and uses PCIe Gen 3, limiting its upgrade path. The 5800XT is the superior processor in every measurable way; the PRO 5755GE only makes sense for power-constrained or iGPU-required systems where performance is secondary.

FAQ

Q: Which CPU has a higher boost clock?

A: The AMD Ryzen 7 5800XT boosts to 4.80 GHz, while the AMD Ryzen 7 PRO 5755GE boosts to 4.60 GHz.

Q: Does the AMD Ryzen 7 PRO 5755GE have integrated graphics?

A: Yes, it includes Radeon Vega 8 integrated graphics, whereas the AMD Ryzen 7 5800XT has no integrated graphics (N/A).

Q: What is the L3 cache difference between the two?

A: The 5800XT has 32 MB of shared L3 cache, while the PRO 5755GE has 16 MB.

Q: Which CPU supports ECC memory?

A: The AMD Ryzen 7 5800XT supports ECC memory (true), while the AMD Ryzen 7 PRO 5755GE does not (false).

Q: How much faster is the 5800XT in Cinebench R23 multi-core?

A: The 5800XT scores 23,794 versus 17,759 for the PRO 5755GE, a 34% advantage.

Q: Are both CPUs on the same socket?

A: Yes, both use AMD Socket AM4.

Head-to-Head Benchmarks

The most lopsided result is PassMark find prime numbers, where the 5800XT scores 119 against 50, a 138% delta — the largest in the entire dataset. This test emphasizes integer arithmetic and memory latency, and the 5800XT’s double L3 cache and higher clocks crush the PRO 5755GE. In PassMark physics, the 5800XT scores 1,355 versus 841, a 61.1% lead, showing a huge advantage in simulated physics calculations. PassMark extended instructions shows a 42.5% gap (24,270 vs 17,029), indicating better SIMD and AVX performance for the 5800XT.

In the Cinebench suite, the deltas are consistently 34% across R15, R20, and R23, for both single and multi-core. For example, Cinebench R20 multi-core shows 9,993 vs 7,458, and R20 single-core shows 1,410 vs 1,052. This uniformity suggests the clock speed and cache advantage translates directly to both lightly and heavily threaded rendering tasks. PassMark multithread shows a 34.4% lead (28,053 vs 20,870), reinforcing the multi-core picture. Data compression is a 39.2% win (352,002 vs 252,937), and data encryption is a 26.7% win (21,461 vs 16,937).

The smallest win is PassMark single-thread, where the 5800XT scores 3,535 versus 3,353, a 5.4% edge. This is the only benchmark where the PRO 5755GE gets close, likely because the single-thread test is less sensitive to cache size and more to raw boost clock. Integer math (11.8% lead), floating-point math (15.5% lead), and random string sorting (31.2% lead) all favor the 5800XT. Across all 17 benchmarks, the 5800XT’s average win is roughly 34%, making it the clear choice for any workload where performance is the goal. The PRO 5755GE’s only redeeming features in the data are its 35W TDP and integrated graphics, which are not benchmarked in this head-to-head.