AMD Radeon RX Vega 64 vs NVIDIA GeForce RTX 5080 Comparison

The NVIDIA GeForce RTX 5080 and AMD Radeon RX Vega 64 represent two very different generations of GPU design, separated by nearly eight years of architectural evolution. The data shows a decisive performance gap, with the RTX 5080 winning all three head-to-head benchmark comparisons by overwhelming margins, while the RX Vega 64 still holds a respectable position in the overall percentile rankings. This analysis walks through the benchmark results, architectural shifts, and specification differences that define this matchup.

Head-to-Head Benchmarks

The head-to-head data contains three benchmark comparisons, and the NVIDIA GeForce RTX 5080 wins every single one. The most dramatic result comes from the 3dmark_3dmark_steel_nomad_dx12 test, where the RTX 5080 scores 8,637 against the RX Vega 64's 1,669. That translates to a 417.5% advantage for the newer card — a more than fivefold increase in raw performance. In practical terms, this benchmark reflects modern DirectX 12 workloads, and the RTX 5080 obliterates the older architecture in that scenario.

The compute-oriented results tell a similar story. In geekbench_opencl, the RTX 5080 posts 235,901 points versus 62,552 for the RX Vega 64, a 277.1% delta. OpenCL performance often scales with raw shading power and memory bandwidth, both of which heavily favor the newer card. Meanwhile, geekbench_vulkan shows the RTX 5080 at 255,450 points compared to 67,032 for the RX Vega 64, a 281.1% advantage. Vulkan is a low-overhead API that rewards modern hardware design, and the gap here confirms that the RTX 5080's architecture extracts far more efficiency from the same workload.

It is importantly the RX Vega 64's average benchmark score of 50,001 places it in the 86th percentile among all GPUs, while the RTX 5080 sits at 87th percentile with an average score of 56,083. This seems contradictory at first glance — the RTX 5080 has a higher average but only one percentile point more. However, the average benchmark score includes different test sets for each card. The RX Vega 64's nearest rivals include the NVIDIA GeForce RTX 5070 Ti at 49,957 (a 0.1% delta) and the Intel Arc A550M at 49,737 (0.5% delta), showing that the older AMD card still competes with much newer mid-range hardware in aggregate terms. The RTX 5080, by contrast, sits near the AMD Radeon 8060S at 55,757 (0.6% delta) and the AMD Radeon RX 9070 GRE at 57,367 (-2.2% delta), indicating a closely packed field at that performance tier.

FAQ

Q: How much faster is the RTX 5080 in 3DMark Steel Nomad compared to the RX Vega 64?

A: The RTX 5080 scores 8,637 versus 1,669 for the RX Vega 64, which is a 417.5% improvement. This is the largest gap in any head-to-head test.

Q: Which card has better Vulkan performance?

A: The RTX 5080 wins decisively in geekbench_vulkan with a score of 255,450 compared to the RX Vega 64's 67,032, representing a 281.1% advantage.

Q: Does the RX Vega 64 have any ray tracing or tensor core hardware?

A: No. The RX Vega 64 has no rtCores and no tensorCores listed in the data. The RTX 5080, by contrast, includes 84 ray tracing cores and 336 tensor cores.

Q: What is the memory configuration difference between the two cards?

A: The RTX 5080 uses 16 GB of GDDR7 memory on a 256-bit bus with 960.0 GB/s bandwidth. The RX Vega 64 uses 8 GB of HBM2 memory on a 2048-bit bus with 483.8 GB/s bandwidth.

Q: How do the transistor counts compare?

A: The RTX 5080 has 45,600 million transistors on a 378 mm² die, while the RX Vega 64 has 12,500 million transistors on a 495 mm² die. The RTX 5080 achieves a transistor density of 120.6M / mm² versus 25.3M / mm² for the RX Vega 64.

Q: Which card has a higher boost clock?

A: The RTX 5080 boosts to 2617 MHz, while the RX Vega 64 boosts to 1546 MHz. The base clocks are 2295 MHz and 1247 MHz, respectively.

Architecture Differences

The architectural divide between these two cards is vast. The RTX 5080 uses the GB203 chip built on Blackwell 2.0 architecture, manufactured on a 5 nm process at TSMC. The RX Vega 64 uses the Vega 10 chip with GCN 5.0 architecture, produced on a 14 nm process at GlobalFoundries. The process node difference alone — 5 nm versus 14 nm — explains much of the efficiency and density gap.

Transistor counts reflect this generational leap. The RTX 5080 packs 45,600 million transistors into a 378 mm² die, yielding a density of 120.6M / mm². The RX Vega 64 has only 12,500 million transistors spread across a larger 495 mm² die, resulting in 25.3M / mm². Despite having a smaller physical die, the RTX 5080 contains nearly four times the transistors, which enables its far higher core counts.

The shading architecture differs fundamentally. The RTX 5080 features 10,752 shading units, 336 texture mapping units, and 112 raster output units. The RX Vega 64 offers 4,096 shading units, 256 TMUs, and 64 ROPs. Beyond raw counts, the RTX 5080 adds dedicated 84 ray tracing cores and 336 tensor cores — hardware that the RX Vega 64 lacks entirely, as it predates the ray tracing era.

Memory subsystems also reflect different design philosophies. The RTX 5080 uses 16 GB of GDDR7 on a 256-bit bus, achieving 960.0 GB/s bandwidth. The RX Vega 64 uses 8 GB of HBM2 on a 2048-bit bus, delivering 483.8 GB/s. The RTX 5080's narrower bus is compensated by much faster memory technology, nearly doubling bandwidth. The RX Vega 64's wide HBM2 bus was innovative for its time but is now bandwidth-limited compared to modern GDDR7.

The compute capabilities show a similar pattern. The RTX 5080 delivers 56.28 TFLOPS of FP32 performance and matches that in FP16 at a 1:1 ratio. The RX Vega 64 offers 12.66 TFLOPS FP32 and 25.33 TFLOPS FP16 at a 2:1 ratio. The RTX 5080's FP16 throughput is more than double the RX Vega 64's, and its FP32 throughput is over four times higher.

Specification Differences

The two cards differ across nearly every specification field. The RTX 5080 has a base clock of 2295 MHz and a boost clock of 2617 MHz, while the RX Vega 64 operates at 1247 MHz base and 1546 MHz boost. Memory clocks are 1875 MHz (30 Gbps effective) for the RTX 5080 versus 945 MHz (1890 Mbps effective) for the RX Vega 64.

Power requirements diverge significantly. The RTX 5080 has a TDP of 360 W with a suggested PSU of 750 W, using a single 16-pin connector. The RX Vega 64 draws 295 W with a 600 W suggested PSU, using two 8-pin connectors. Both are dual-slot cards, but the RTX 5080 is longer at 304 mm versus 280 mm for the RX Vega 64, with heights of 137 mm and 111 mm respectively.

The bus interfaces differ by a full generation: the RTX 5080 uses PCIe 5.0 x16 while the RX Vega 64 uses PCIe 3.0 x16. Display outputs also differ — the RTX 5080 offers 1x HDMI 2.1b and 3x DisplayPort 2.1b, while the RX Vega 64 provides 1x HDMI 2.0b and 3x DisplayPort 1.4a. The RTX 5080 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, whereas the RX Vega 64 is limited to DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6.

Production status also differs: the RTX 5080 is listed as Active with a release date of 2025-01-29, while the RX Vega 64 is End-of-life with a release date of 2017-08-06. The RTX 5080's predecessor is the GeForce 40 series and its successor is GeForce 60, while the RX Vega 64's predecessor is Polaris and successor is Navi.

The Verdict

The data points to an unambiguous conclusion: the RTX 5080 is the superior product in every measured benchmark. With a 417.5% lead in 3DMark Steel Nomad, a 277.1% lead in OpenCL, and a 281.1% lead in Vulkan, there is no workload category where the RX Vega 64 comes close. The RTX 5080 also carries more memory (16 GB versus 8 GB), higher bandwidth (960.0 GB/s versus 483.8 GB/s), and nearly double the pixel rate (293.1 GPixel/s versus 98.94 GPixel/s). For any modern gaming, compute, or rendering task, the RTX 5080 is the clear choice.

However, the RX Vega 64 is not without merit in context. Its average benchmark score of 50,001 places it in the 86th percentile of all GPUs, and it trades blows with the NVIDIA GeForce RTX 5070 Ti (0.1% delta) and the AMD Radeon RX 6900 XT (-1.9% delta). For a card released in 2017, that level of sustained competitiveness is remarkable. Its HBM2 memory and 2048-bit bus were forward-looking designs, and its GCN 5.0 architecture proved durable. If the choice is between these two cards specifically, the RTX 5080 wins outright — but the RX Vega 64's legacy as a high-performance part remains intact.

Where Each One Wins

The RTX 5080 wins in every directly comparable scenario. In 3DMark Steel Nomad, which is a modern DirectX 12 benchmark, it is 417.5% faster. In compute-heavy OpenCL workloads, it leads by 277.1%. In Vulkan-based applications, it is 281.1% ahead. These are not marginal wins; they are generational leaps. The RTX 5080's ray tracing cores and tensor cores also unlock features that the RX Vega 64 cannot use at all, making it the only option for ray-traced gaming or AI-accelerated workloads.

The RX Vega 64's "wins" are more about efficiency of legacy. It has a lower TDP (295 W versus 360 W) and a smaller physical footprint (280 mm length versus 304 mm), which could matter in compact builds. Its PCIe 3.0 interface is also more compatible with older motherboards. In aggregate benchmark scores, it still holds its own against much newer cards, as its nearest rivals include the RTX 5070 Ti and RX 6900 XT. For users who already own an RX Vega 64 and are satisfied with its performance, there is no urgency to upgrade based on the data — but for anyone choosing between these two products today, the RTX 5080 is the definitive pick.