AMD Radeon RX 7900 GRE vs NVIDIA RTX A1000 Comparison

The NVIDIA RTX A1000 and AMD Radeon RX 7900 GRE occupy opposite ends of the performance and power spectrum, and their benchmark results reflect this fundamental divide. The data shows a decisive victory for the AMD card across every tested workload, but the RTX A1000’s 50 W power draw and single-slot profile position it for a completely different set of tasks. The following analysis breaks down where each card wins, the architectural gulf between them, and who should choose which based strictly on the numbers.

Where Each One Wins

The benchmark results are unambiguous: the AMD Radeon RX 7900 GRE wins all three head-to-head tests. In 3DMark Steel Nomad DX12, it scores 4814 against the RTX A1000’s 969, a 79.9% advantage. In Geekbench OpenCL, the gap is 175758 versus 52078, a 70.4% lead. In Geekbench Vulkan, it posts 99850 against 49574, a 50.4% margin. There are no tests in which the RTX A1000 comes out ahead.

However, the RTX A1000’s wins are not measured in raw performance but in efficiency and physical footprint. Its 50 W TDP is five times lower than the RX 7900 GRE’s 260 W, and it requires no power connectors, drawing entirely from the PCIe slot. It is a single-slot card at 163 mm in length, versus the RX 7900 GRE’s dual-slot, 276 mm design. For workstation environments where space is constrained, power budgets are tight, and compute density matters more than frame rates, the RTX A1000 is the practical choice. The RX 7900 GRE wins every benchmark, but the RTX A1000 wins the deployment scenario.

Architecture Differences

The two cards come from different foundries, process nodes, and architectural generations. The RTX A1000 uses the GA107 chip on Samsung’s 8 nm process, packing 8,700 million transistors into a 200 mm² die. The RX 7900 GRE uses the Navi 31 chip on TSMC’s 5 nm process, with 57,700 million transistors across 529 mm². The transistor density tells the story: the AMD chip achieves 109.1M transistors per mm², more than double the RTX A1000’s 43.5M per mm².

The RX 7900 GRE’s RDNA 3.0 architecture (codename Plum Bonito) is built for massive parallel throughput. It has 5120 shading units, 320 texture mapping units, and 160 ROPs, against the RTX A1000’s 2304 shading units, 72 TMUs, and 32 ROPs. The AMD card also has 80 ray tracing cores, compared to 18 on the NVIDIA card. The RTX A1000 does feature 72 tensor cores, which the RX 7900 GRE lacks entirely, but this does not translate into a win in any of the tested benchmarks.

Memory is another major differentiator. The RX 7900 GRE comes with 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The RTX A1000 has 8 GB of GDDR6 on a 128-bit bus, with 192.0 GB/s. The AMD card’s clock speeds are also far higher: a boost of 2245 MHz versus 1462 MHz, and a game clock of 1880 MHz versus no game clock on the NVIDIA card. The RTX A1000’s FP32 performance is 6.737 TFLOPS, while the RX 7900 GRE hits 45.98 TFLOPS — a 6.8x difference.

Head-to-Head Benchmarks

The 3DMark Steel Nomad DX12 test shows the largest relative gap. The RX 7900 GRE’s 4814 score is 79.9% higher than the RTX A1000’s 969. This is a synthetic DirectX 12 workload that scales heavily with shading units and memory bandwidth, both of which favor the AMD card by wide margins. The RX 7900 GRE has more than double the shading units and three times the memory bandwidth, and the score reflects that.

In Geekbench OpenCL, the RX 7900 GRE scores 175758 against 52078, a 70.4% lead. This test exercises general-purpose compute, where the AMD card’s 45.98 TFLOPS FP32 throughput and 91.96 TFLOPS FP16 (2:1 ratio) give it a massive raw compute advantage. The RTX A1000’s FP16 is 6.737 TFLOPS at a 1:1 ratio, meaning it does not gain any extra throughput for half-precision work.

The Geekbench Vulkan test shows the smallest relative margin, but the RX 7900 GRE still wins by 50.4%, scoring 99850 against 49574. Vulkan’s lower-level API can sometimes narrow gaps by reducing driver overhead, but here the AMD card’s hardware advantages are too large to overcome. The RX 7900 GRE’s 256-bit memory bus and 576.0 GB/s bandwidth likely contribute to its lead in this API, which is sensitive to memory subsystem performance.

The RTX A1000’s average benchmark score across all tests is 34207, which places it in the 79th percentile of all GPUs. The RX 7900 GRE’s average is 32456, in the 77th percentile. This is an odd inversion: the RX 7900 GRE wins every head-to-head test but has a lower average score because it is dragged down by several low PassMark results, including a 139 in DirectX 10 and a 107 in DirectX 12. The RTX A1000 only has three benchmark entries, all of which are relatively high.

The Verdict

The verdict depends entirely on the use case. For anyone running 3D applications, compute workloads, or Vulkan-based software, the RX 7900 GRE is the clear winner. It is 79.9% ahead in Steel Nomad, 70.4% ahead in OpenCL, and 50.4% ahead in Vulkan. Its 16 GB of memory, 576.0 GB/s bandwidth, and 45.98 TFLOPS FP32 throughput make it a far more capable card for any performance-sensitive task. The data shows no scenario in which the RTX A1000 outperforms it.

For workstation environments where power and space are the primary constraints, the RTX A1000 is the only viable choice. Its 50 W TDP means it can run in systems with a 250 W suggested PSU, while the RX 7900 GRE requires a 600 W unit. The RTX A1000 is single-slot and 163 mm long, fitting into chassis that cannot accommodate a 276 mm dual-slot card. It also requires no power connectors, simplifying installation. The RTX A1000’s 79th percentile ranking versus the RX 7900 GRE’s 77th suggests that, across all GPU workloads, the smaller card holds its own in aggregate.

The RX 7900 GRE’s nearest rivals — the AMD FirePro S10000 and S9300 X2 — have average scores within 0.2% and 0.3% respectively, indicating that it sits in a competitive performance band. The RTX A1000’s nearest rivals, including the RTX A2000 12 GB and TITAN V, are similarly close. Neither card is an outlier in its class, but the RX 7900 GRE’s head-to-head dominance is absolute.

FAQ

Q: Which card wins in 3DMark Steel Nomad DX12?

A: The AMD Radeon RX 7900 GRE wins with a score of 4814, which is 79.9% higher than the NVIDIA RTX A1000’s 969.

Q: What is the power consumption difference between the two cards?

A: The RTX A1000 has a TDP of 50 W and requires no power connectors, while the RX 7900 GRE has a TDP of 260 W and needs two 8-pin connectors.

Q: Does the RTX A1000 have any advantage in compute benchmarks?

A: No. The RX 7900 GRE wins Geekbench OpenCL by 70.4% (175758 versus 52078) and Geekbench Vulkan by 50.4% (99850 versus 49574).

Q: How much memory bandwidth does each card have?

A: The RX 7900 GRE has 576.0 GB/s from 16 GB of GDDR6 on a 256-bit bus, while the RTX A1000 has 192.0 GB/s from 8 GB of GDDR6 on a 128-bit bus.

Q: Which card has a higher transistor density?

A: The RX 7900 GRE has 109.1M transistors per mm² on a 529 mm² die, while the RTX A1000 has 43.5M transistors per mm² on a 200 mm² die.

Q: Are there any benchmarks where the RTX A1000 wins?

A: No. In the three head-to-head tests, the RX 7900 GRE wins all of them. The RTX A1000 does have a higher average benchmark score overall (34207 versus 32456) and a higher percentile ranking (79th versus 77th).