AMD Radeon Pro Vega 64X vs NVIDIA GeForce RTX 5090 Comparison

The AMD Radeon Pro Vega 64X and the NVIDIA GeForce RTX 5090 represent two vastly different eras of GPU design, separated by nearly six years of architectural evolution. The data in the FACT PACK shows a single direct benchmark comparison, yet the surrounding specifications and rival positioning paint a clear picture of two products with entirely different purposes and performance envelopes. The Vega 64X, an end-of-life mobile-class part from 2019, and the RTX 5090, an active desktop flagship from 2025, share only their percentile ranking among all GPUs and their position as rivals to each other in the aggregate benchmark database.

Head-to-Head Benchmarks

The only direct benchmark comparison available in the data is the Geekbench OpenCL test, and the result is decisive. The RTX 5090 scores 334,370 points, while the Radeon Pro Vega 64X scores 78,467 points. This represents a delta of -76.5% for the Vega 64X, meaning the RTX 5090 is roughly 4.3 times faster in this compute-oriented workload. The margin is so large that it transcends generational improvement; it is a categorical shift in compute capability.

Breaking down the aggregate scores adds context. The Vega 64X has an average benchmark score of 80,959 across its two recorded tests (Geekbench Metal at 83,450 and Geekbench OpenCL at 78,467), while the RTX 5090's average of 79,842 is pulled from a much wider test suite. Interestingly, the RTX 5090's average is actually 1.4% lower than the Vega 64X's average, despite winning the OpenCL test outright. This paradox is explained by the RTX 5090's benchmark portfolio, which includes demanding DirectX and Passmark tests where scores are numerically lower. For instance, the RTX 5090 scores 18,355 in 3DMark Steel Nomad DX12, 39,650 in Passmark G3D, and 26,756 in Passmark GPU Compute, but only 226 in Passmark DirectX 10 and 185 in Passmark DirectX 12. The Vega 64X simply has no comparable DirectX or Passmark results in the pack, so its average is skewed by its two strong Geekbench scores.

The rival positioning in the nearestRivals arrays confirms that these two GPUs are not true competitors in real-world performance. The Vega 64X's nearest rival is the AMD Radeon PRO W6600, which scores 81,995 (1.3% higher), followed by the RTX 5090 at 79,842 (1.4% higher) and the Tesla P100 variants. The RTX 5090's nearest rivals are the Tesla P100 PCIe 16 GB (79,605, 0.3% lower) and the AMD Radeon RX 6850M XT (78,940, 1.1% lower), with the Vega 64X appearing fourth at 80,959 (1.4% higher). This suggests that in the aggregate database, the Vega 64X and RTX 5090 land in the same percentile bracket (92nd for both), but their individual benchmark profiles could not be more different.

The Verdict

The data makes a straightforward recommendation for most users: the RTX 5090 is the superior performer in any compute or graphics workload measured in the pack. Its OpenCL score of 334,370 dwarfs the Vega 64X's 78,467, and its specification sheet shows a GPU with 21,760 shading units, 680 texture mapping units, and 176 ROPs, compared to the Vega 64X's 4,096 shading units, 256 TMUs, and 64 ROPs. The RTX 5090 also offers 32 GB of GDDR7 memory with 1.79 TB/s bandwidth, versus 16 GB of HBM2 with 512 GB/s on the Vega 64X.

However, the verdict is not entirely one-sided when context is applied. The Vega 64X is an integrated graphics processor (IGP) with no power connectors and a 250 W TDP, designed for portable devices. The RTX 5090 is a dual-slot, 575 W discrete card requiring a 950 W suggested PSU and a 16-pin power connector. For a user constrained to a portable device with no upgrade path, the Vega 64X is the only option in its class; the RTX 5090 physically cannot be installed in such a system. The data shows the Vega 64X holds its own in the aggregate rankings (92nd percentile), but its end-of-life status and lack of modern API support (DirectX 12_1 versus 12 Ultimate) make it a legacy part. The RTX 5090, with DirectX 12 Ultimate, Vulkan 1.4, 170 ray tracing cores, and 680 tensor cores, is the clear choice for any workload where installation is possible and power delivery is available.

Architecture Differences

The architectural gap between these two GPUs is immense. The Vega 64X uses the Vega 10 chip built on GlobalFoundries' 14 nm process, employing the GCN 5.0 architecture. It contains 12,500 million transistors on a 495 mm² die, yielding a transistor density of 25.3 million per square millimeter. The RTX 5090 uses the GB202 chip on TSMC's 5 nm process, employing the Blackwell 2.0 architecture. It packs 92,200 million transistors on a 750 mm² die, achieving a transistor density of 122.9 million per square millimeter — nearly five times denser per unit area and over seven times the total transistor count.

The Vega 64X's GCN 5.0 architecture lacks dedicated ray tracing cores and tensor cores, fields that are null in the data. The RTX 5090's Blackwell 2.0 architecture includes 170 ray tracing cores and 680 tensor cores, enabling hardware-accelerated ray tracing and AI compute that the Vega 64X cannot perform natively. The FP16 compute rates also differ dramatically: the Vega 64X achieves 24.05 TFLOPS FP16 with a 2:1 ratio relative to its 12.03 TFLOPS FP32, while the RTX 5090 achieves 104.8 TFLOPS for both FP16 and FP32 with a 1:1 ratio. This means the RTX 5090 does not rely on reduced precision for its FP16 throughput, whereas the Vega 64X halves its precision to double its rate.

The memory architectures are similarly divergent. The Vega 64X uses HBM2 with a 2048-bit bus and 512.0 GB/s bandwidth, typical of the high-bandwidth stacked memory of its era. The RTX 5090 uses GDDR7 with a 512-bit bus and 1.79 TB/s bandwidth, over three times the bandwidth despite using discrete memory chips. The Vega 64X's memory operates at 1000 MHz (2 Gbps effective), while the RTX 5090's memory runs at 1750 MHz (28 Gbps effective).

Specification Differences

The specification sheets differ on nearly every measurable field. The manufacturing process shows 14 nm for the Vega 64X versus 5 nm for the RTX 5090. Foundry differs: GlobalFoundries for AMD, TSMC for NVIDIA. Transistor count is 12,500 million versus 92,200 million, and die size is 495 mm² versus 750 mm². Transistor density is 25.3M/mm² versus 122.9M/mm².

Clock speeds show the RTX 5090's advantage: base clock of 2017 MHz versus 1250 MHz, and boost clock of 2407 MHz versus 1468 MHz. Memory size is 16 GB versus 32 GB, memory type is HBM2 versus GDDR7, and bandwidth is 512.0 GB/s versus 1.79 TB/s. The shading units number 4,096 versus 21,760, TMUs are 256 versus 680, and ROPs are 64 versus 176. Pixel rate is 93.95 GPixel/s versus 423.6 GPixel/s, and texture rate is 375.8 GTexel/s versus 1,636.8 GTexel/s. FP32 compute is 12.03 TFLOPS versus 104.8 TFLOPS.

Power and physical characteristics differ completely. The Vega 64X has a 250 W TDP, is an IGP (integrated graphics processor) with no power connectors, and has no suggested PSU. The RTX 5090 has a 575 W TDP, is dual-slot, requires a 1x 16-pin power connector and a 950 W suggested PSU, and measures 304 mm in length, 137 mm in height, and 40 mm in width. The bus interface is PCIe 3.0 x16 for the Vega 64X versus PCIe 5.0 x16 for the RTX 5090. Display outputs are "Portable Device Dependent" for the Vega 64X versus 1x HDMI 2.1b and 3x DisplayPort 2.1b for the RTX 5090. API support shows DirectX 12 (12_1) versus DirectX 12 Ultimate (12_2), Vulkan 1.3 versus 1.4, and OpenGL 4.6 for both. Production status is end-of-life versus active, and release dates are 2019-03-18 versus 2025-01-29.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon Pro Vega 64X has an average benchmark score of 80,959, which is 1.4% higher than the NVIDIA GeForce RTX 5090's average of 79,842. However, this is based on only two Geekbench tests for the Vega 64X versus ten tests for the RTX 5090, including several Passmark sub-tests with low scores.

Q: What is the largest performance delta in the head-to-head benchmark?

A: The only head-to-head benchmark is Geekbench OpenCL, where the RTX 5090 scores 334,370 versus the Vega 64X's 78,467. The delta is -76.5% for the Vega 64X, indicating a massive victory for the RTX 5090.

Q: Does the RTX 5090 support ray tracing?

A: Yes, the RTX 5090 has 170 ray tracing cores as part of its Blackwell 2.0 architecture. The Vega 64X's GCN 5.0 architecture has no ray tracing cores listed in the data.

Q: What is the memory bandwidth difference?

A: The RTX 5090 has 1.79 TB/s of bandwidth from 32 GB of GDDR7 memory on a 512-bit bus. The Vega 64X has 512.0 GB/s of bandwidth from 16 GB of HBM2 memory on a 2048-bit bus, which is roughly 3.5 times less bandwidth.

Q: Are both GPUs in the same performance percentile?

A: Yes, both the Vega 64X and the RTX 5090 are in the 92nd percentile against all GPUs, despite their vastly different absolute performance in individual tests. This reflects the aggregate scoring methodology.

Q: What is the transistor density difference?

A: The RTX 5090 has a transistor density of 122.9M per mm² on TSMC's 5 nm process, while the Vega 64X has 25.3M per mm² on GlobalFoundries' 14 nm process. The RTX 5090 is nearly five times denser.

Where Each One Wins

The RTX 5090 wins decisively in every performance metric recorded. Its Geekbench OpenCL score is 4.3 times higher. Its FP32 compute of 104.8 TFLOPS is 8.7 times the Vega 64X's 12.03 TFLOPS. Its pixel rate of 423.6 GPixel/s is 4.5 times higher, and its texture rate of 1,636.8 GTexel/s is 4.4 times higher. It has 5.3 times the shading units, 2.7 times the TMUs, and 2.75 times the ROPs. It offers double the memory capacity and 3.5 times the bandwidth. It supports modern APIs including DirectX 12 Ultimate and Vulkan 1.4, with hardware ray tracing and tensor cores. Its active production status and 2025 release date mean it is a current product with ongoing support.

The Vega 64X wins only in specific contextual situations. As an IGP with no power connectors and a 250 W TDP, it is designed for portable devices where the RTX 5090's 575 W TDP, dual-slot size, and 950 W suggested PSU are physically impossible. In the aggregate benchmark database, the Vega 64X's average score of 80,959 is higher than the RTX 5090's 79,842, and it also edges out the RTX 5090 by 1.4% in the nearestRivals comparison. Its HBM2 memory, while lower bandwidth, offers a different memory technology that may be relevant in specific legacy workloads. Its end-of-life status means it is a mature product with stable drivers, but this is a minor advantage given its age.

The data ultimately shows a generational chasm. The RTX 5090 is the overwhelming choice for any desktop workload requiring maximum compute, graphics, or AI performance. The Vega 64X remains relevant only for portable, power-constrained systems where its integrated nature is the deciding factor.