AMD Ryzen 7 3800X vs AMD Ryzen 7 PRO 5755GE Comparison

The AMD Ryzen 7 PRO 5755GE and AMD Ryzen 7 3800X are both 8-core, 16-thread desktop processors built for the AM4 socket, but they represent two very different eras of AMD’s design philosophy. The 3800X, a 2019 release, leans on raw clock speed and a larger cache pool, while the 5755GE, a 2024 part, prioritizes efficiency and architectural maturity. Benchmark data reveals a clear split: the older chip wins the majority of tests, but the newer part secures decisive victories in specific workloads that highlight its Zen 3 foundation.

Head-to-Head Benchmarks

The AMD Ryzen 7 3800X dominates the Cinebench suite across the board. In Cinebench R23 multi-core, it scores 19,588 against the 5755GE’s 17,759, a delta of -9.3% for the latter. The single-core result mirrors this: 2,765 versus 2,507, again a -9.3% gap. The pattern holds in Cinebench R20 (8,226 vs 7,458, -9.3%) and R15 (1,974 vs 1,789, -9.4%). Every Cinebench iteration, regardless of thread count, shows the 3800X ahead by roughly 9%, a consistent margin that suggests a fundamental clock-speed advantage rather than a workload-specific quirk.

The 3800X also wins the PassMark multi-thread test with 23,046 points versus 20,870 (-9.4%). Its lead extends to data compression (304,853 vs 252,937, -17%), data encryption (19,337 vs 16,937, -12.4%), extended instructions (20,037 vs 17,029, -15%), and random string sorting (32,869 vs 27,373, -16.7%). The most extreme gap appears in the find prime numbers test, where the 3800X posts 103 versus just 50 for the 5755GE, a -51.5% deficit. Physics simulation also favors the older chip heavily: 1,226 versus 841, a -31.4% difference.

The 5755GE fights back in three key areas, and it does so with authority. Its PassMark single-thread score of 3,353 eclipses the 3800X’s 2,712 by 23.6%, a substantial reversal of the Cinebench single-core trend. In integer math, the newer chip scores 84,004 versus 67,725, a 24% advantage. Floating-point math goes its way too: 46,589 versus 39,759, a 17.2% win. These are not marginal victories; they are large enough to suggest that the 5755GE’s Zen 3 architecture handles math-heavy, single-threaded instruction streams far more efficiently than the older Zen 2 design.

Of the 17 head-to-head benchmarks, the 3800X wins 13, while the 5755GE takes 4. That raw count is lopsided, but the quality of the 5755GE’s wins matters. The single-thread and math results point to a processor that excels in specific, modern workloads, even if its overall multi-threaded throughput trails.

Where Each One Wins

The AMD Ryzen 7 3800X is the clear choice for multi-threaded productivity. Its Cinebench R23 multi-core score of 19,588 and PassMark multi-thread score of 23,046 indicate strong performance in rendering, video encoding, and other heavily threaded tasks. The data compression and encryption wins (304,853 and 19,337 respectively) further cement its position for database work, file archiving, and secure data handling. The physics simulation result (1,226) also suggests an edge in certain scientific or simulation workloads that rely on deterministic integer operations.

The AMD Ryzen 7 PRO 5755GE stakes its claim on single-thread responsiveness and math throughput. Its PassMark single-thread score of 3,353 is the standout figure, implying snappy application launches and responsive general desktop use. The integer math score of 84,004 and floating-point score of 46,589 indicate a processor that excels in financial modeling, engineering calculations, and any workload that heavily exercises the ALU and FPU. For users who prioritize interactive performance over batch rendering, the 5755GE’s profile is more attractive.

The 3800X’s wins are broad but not universal. The 5755GE’s wins are narrow but decisive. In a mixed workload environment, the 3800X will feel faster more often, but the 5755GE will shine in specific, math-centric applications. The single-thread delta of 23.6% is particularly telling; it shows that the 5755GE is not simply a low-power variant, but a chip with a genuinely different performance character.

Architecture Differences

The two processors are built on different Zen generations. The 5755GE uses Zen 3, codenamed Cezanne, while the 3800X uses Zen 2, codenamed Matisse. Both are fabricated on a 7 nm process at TSMC, but the transistor counts tell a stark story. The 5755GE packs 10,700 million transistors on a 180 mm² die, while the 3800X has just 3,800 million on a 74 mm² die. The newer chip’s larger transistor budget reflects its integrated graphics and more complex core design.

The cache configurations differ significantly. Both have 64 KB of L1 per core and 512 KB of L2 per core, but the L3 cache is halved on the 5755GE: 16 MB versus 32 MB on the 3800X. This is a notable difference, as the 3800X’s larger L3 pool helps in cache-sensitive workloads. However, the 5755GE’s Zen 3 architecture features a unified 8-core complex, which can reduce latency compared to the 3800X’s dual quad-core complex design, even with less L3.

The 5755GE includes integrated Radeon Vega 8 graphics, while the 3800X has no integrated graphics at all. This makes the 5755GE a self-contained solution for systems without a discrete GPU. The 3800X requires a separate graphics card. The 5755GE also carries a PRO designation, indicating enterprise-focused features, though the data does not specify what those entail beyond the naming.

The PCIe support differs as well. The 5755GE offers Gen 3 with 16 lanes from the CPU, while the 3800X provides Gen 4 with 24 lanes. This gives the 3800X more bandwidth for high-speed NVMe drives and GPUs, a significant advantage for storage-heavy builds.

Specification Differences

The most glaring difference is TDP. The 5755GE is rated at 35 watts, while the 3800X consumes 105 watts. That is a threefold difference in power envelope, and it explains why the 3800X can sustain higher clocks: its base clock is 3.90 GHz versus 3.20 GHz, and its boost clock is 4.50 GHz versus 4.60 GHz. The 5755GE actually boosts higher, but its lower base clock and power limit cap its sustained multi-core performance.

The 3800X has an unlocked multiplier, while the 5755GE is locked. Overclocking is only possible on the older chip. The release dates are far apart: the 3800X launched on 2019-07-06, and the 5755GE on 2024-09-04. The 3800X has a launch MSRP of $399, while the 5755GE has no listed MSRP.

Both support DDR4 memory with dual-channel configuration and 51.2 GB/s bandwidth. Neither supports ECC memory. The socket is identical: AMD Socket AM4. The market segment for both is Desktop. The 3800X’s part number is 100-000000025, while the 5755GE’s is 100-000001750.

FAQ

Q: Which CPU is faster in multi-core Cinebench R23?

A: The AMD Ryzen 7 3800X scores 19,588, which is 9.3% higher than the 5755GE’s 17,759.

Q: Does the 5755GE beat the 3800X in any single benchmark?

A: Yes. The 5755GE wins PassMark single-thread (3,353 vs 2,712, +23.6%), integer math (84,004 vs 67,725, +24%), and floating-point math (46,589 vs 39,759, +17.2%).

Q: What is the TDP difference between these two processors?

A: The 5755GE has a 35-watt TDP, while the 3800X has a 105-watt TDP.

Q: Which CPU has more L3 cache?

A: The 3800X has 32 MB of L3 cache, double the 5755GE’s 16 MB.

Q: Do both CPUs require a discrete graphics card?

A: No. The 5755GE has integrated Radeon Vega 8 graphics, while the 3800X has no integrated graphics.

Q: Which processor supports PCIe Gen 4?

A: The 3800X supports PCIe Gen 4 with 24 lanes, while the 5755GE is limited to PCIe Gen 3 with 16 lanes.