AMD Radeon RX 6500 XT vs AMD Radeon RX 7800 XT Comparison

AMD Radeon RX 6500 XT and AMD Radeon RX 7800 XT occupy opposite ends of the Radeon stack, separated by a full architecture generation and a 3x difference in average benchmark score. The RX 6500 XT, a 6 nm Navi 24 part from the RDNA 2.0 era, wins two of ten head-to-head tests, while the RX 7800 XT, a 5 nm Navi 32 chip built on RDNA 3.0, takes the remaining eight. The data shows a split personality: the older card leads in compute-oriented and Vulkan workloads, while the newer card dominates everything rasterization-based, often by margins exceeding 60%.

Where Each One Wins

The RX 6500 XT’s victories are narrow but telling. In Geekbench Vulkan, it scores 54,724 against the RX 7800 XT’s 54,228, a 0.9% edge that is effectively a statistical tie. Its more decisive win comes in Geekbench OpenCL, where it posts 48,289 versus 18,290 — a 164% advantage. That is the single largest delta in the entire comparison, and it flips the expected hierarchy. The RX 6500 XT has 1,024 shading units and 64 TMUs, fewer than the RX 7800 XT’s 3,840 and 240, yet its OpenCL result is more than 2.6 times higher. The likely explanation lies in driver optimization and workload characteristics rather than raw hardware throughput, since the FP32 figures (5.765 TFLOPS vs 37.32 TFLOPS) heavily favor the RX 7800 XT.

Every other test belongs to the RX 7800 XT. The most lopsided win is in 3DMark Steel Nomad DX12, where it scores 4,157 versus 235, a 94.3% gap. That is not a close contest; it is a generational obliteration. PassMark DirectX 9, 10, 11, and 12 all go to the RX 7800 XT with deltas ranging from 50.4% to 64.5%. In PassMark G3D, the RX 7800 XT scores 24,176 against 9,608, a 60.3% lead. PassMark GPU Compute shows a 66.9% advantage (13,473 vs 4,456). Even the 2D test, PassMark G2D, favors the RX 7800 XT at 1,177 versus 815, though this 30.8% gap is the smallest of its wins.

The win distribution is clear: the RX 6500 XT is a compute and API-specific outlier, while the RX 7800 XT is the rasterization and general-purpose champion. For gaming, the RX 7800 XT’s DirectX scores are the relevant ones, and they are uniformly dominant. For OpenCL compute tasks, the RX 6500 XT’s result is anomalous but real.

The Verdict

The data supports a simple conclusion: the RX 7800 XT is the superior GPU for virtually all graphics workloads. Its PassMark G3D score of 24,176 versus 9,608 places it 60.3% ahead, and its DirectX 11 and 12 scores (249 and 93) dwarf the RX 6500 XT’s (90 and 38). The 3DMark Steel Nomad result — 4,157 vs 235 — is the clearest signal of next-generation rasterization performance. Anyone choosing between these two for gaming, 3D rendering, or general GPU acceleration should pick the RX 7800 XT without hesitation.

The RX 6500 XT has exactly one legitimate use case: OpenCL compute workloads. Its 164% lead in Geekbench OpenCL is massive, and its Vulkan score is marginally higher. If a specific application relies on OpenCL and does not use DirectX, the RX 6500 XT could be the faster option — but this is a narrow niche. The RX 7800 XT’s nearest rivals include the GeForce GTX 1660 (average score 11,680, delta -0.5%) and the AMD Radeon Pro 5500M (11,528, delta 0.9%). The RX 6500 XT’s nearest rivals include the GTX 1080 (11,960, delta -1%) and the GTX 1660 (11,680, delta 1.4%). Both cards sit near the 51st percentile of all GPUs, meaning they are mid-pack overall despite the RX 7800 XT’s much higher absolute scores in most tests. That percentile parity is driven by the RX 6500 XT’s OpenCL outlier pulling its average up.

For a buyer, the decision is binary: need OpenCL performance above all else, take the RX 6500 XT; need anything else, take the RX 7800 XT. The RX 7800 XT is active in production, while the RX 6500 XT is end-of-life, which further tilts long-term viability toward the newer card.

Head-to-Head Benchmarks

The 3DMark Steel Nomad DX12 test is the most instructive single data point. The RX 7800 XT scores 4,157, and the RX 6500 XT scores 235, yielding a delta of -94.3%. This is not a marginal improvement; it is a 17.7x score multiplier. The RX 7800 XT’s 37.32 TFLOPS FP32 throughput and 233.3 GPixel/s pixel rate versus the RX 6500 XT’s 5.765 TFLOPS and 90.08 GPixel/s explain the magnitude. The RX 7800 XT also has 60 RT cores against 16, making modern ray-traced DX12 workloads categorically different.

Geekbench OpenCL is the reverse. The RX 6500 XT scores 48,289, and the RX 7800 XT scores 18,290, a 164% difference. This is the only test where the RX 6500 XT leads by more than 1%. The RX 6500 XT’s 11.53 TFLOPS FP16 (2:1) versus the RX 7800 XT’s 37.32 TFLOPS FP16 (1:1) does not explain it; the RX 7800 XT has more raw compute. The result suggests OpenCL driver issues on RDNA 3.0 or a workload that favors the RX 6500 XT’s memory architecture (143.9 GB/s bandwidth on a 64-bit bus) in ways not captured by spec sheets.

In DirectX 11, the RX 7800 XT scores 249 against 90, a 63.9% lead. DirectX 12 shows 93 vs 38, a 59.1% gap. DirectX 10 is 121 vs 60, a 50.4% difference. DirectX 9 is 304 vs 108, a 64.5% gap. These are consistent, across-the-board wins for the RX 7800 XT, with no API where the RX 6500 XT closes the gap. PassMark G3D (24,176 vs 9,608) and GPU Compute (13,473 vs 4,456) reinforce the pattern. The RX 7800 XT’s 624.1 GB/s memory bandwidth versus 143.9 GB/s, and its 256-bit bus versus 64-bit, provide the foundation for these wins.

Vulkan is the only other close call: 54,724 vs 54,228, a 0.9% delta in favor of the RX 6500 XT. This is within run-to-run variance, so treat it as a tie rather than a real advantage. The RX 7800 XT still wins 8 of 10 tests outright, with the RX 6500 XT taking one decisive win and one marginal one.

FAQ

Q: Which card wins in DirectX 12 gaming?

A: The RX 7800 XT wins decisively, scoring 93 in PassMark DirectX 12 versus the RX 6500 XT’s 38, a 59.1% advantage. Its 3DMark Steel Nomad DX12 score of 4,157 versus 235 (94.3% gap) confirms this.

Q: Is the RX 6500 XT better at any compute task?

A: Yes, in Geekbench OpenCL the RX 6500 XT scores 48,289 versus 18,290, a 164% lead. This is the single largest performance delta in the entire comparison, and it favors the older, smaller GPU.

Q: How do the two cards compare in Vulkan performance?

A: They are effectively tied. The RX 6500 XT scores 54,724 and the RX 7800 XT scores 54,228, a 0.9% difference that is within noise. Neither card has a meaningful Vulkan advantage.

Q: What are the memory specifications for each card?

A: The RX 6500 XT has 4 GB of GDDR6 on a 64-bit bus with 143.9 GB/s bandwidth. The RX 7800 XT has 16 GB of GDDR6 on a 256-bit bus with 624.1 GB/s bandwidth. The RX 7800 XT has 4x the capacity and over 4x the bandwidth.

Q: Which card has better overall average benchmark score?

A: The RX 6500 XT has a higher average benchmark score of 11,842, versus the RX 7800 XT’s 11,627. However, this is driven by the RX 6500 XT’s OpenCL outlier; the RX 7800 XT wins most individual tests by large margins.

Q: What is the process node difference between the two?

A: The RX 6500 XT uses a 6 nm TSMC process, while the RX 7800 XT uses a 5 nm TSMC process. The RX 7800 XT also has a higher transistor density at 81.2M / mm² versus 50.5M / mm².

Architecture Differences

The two cards are separated by a full architecture generation. The RX 6500 XT uses RDNA 2.0 on the Navi 24 chip, built on a 6 nm TSMC process with 5,400 million transistors on a 107 mm² die. The RX 7800 XT uses RDNA 3.0 on the Navi 32 chip, built on a 5 nm TSMC process with 28,100 million transistors on a 346 mm² die. The transistor density jumps from 50.5M / mm² to 81.2M / mm², reflecting the newer node and design.

Core configuration differs dramatically. The RX 6500 XT has 1,024 shading units, 64 TMUs, 32 ROPs, and 16 RT cores. The RX 7800 XT has 3,840 shading units, 240 TMUs, 96 ROPs, and 60 RT cores — roughly 3.75x the shaders, 3.75x the TMUs, 3x the ROPs, and 3.75x the RT cores. Pixel rate scales from 90.08 GPixel/s to 233.3 GPixel/s, and texture rate from 180.2 GTexel/s to 583.2 GTexel/s. FP32 throughput jumps from 5.765 TFLOPS to 37.32 TFLOPS.

Memory architecture is another generational leap. The RX 6500 XT has 4 GB GDDR6 on a 64-bit bus with 143.9 GB/s bandwidth. The RX 7800 XT has 16 GB GDDR6 on a 256-bit bus with 624.1 GB/s bandwidth. The RX 7800 XT’s FP16 throughput is 37.32 TFLOPS (1:1), while the RX 6500 XT’s FP16 is 11.53 TFLOPS (2:1), meaning the newer card does not halve FP16 rate.

The bus interface differs: the RX 6500 XT uses PCIe 4.0 x4, while the RX 7800 XT uses PCIe 4.0 x16. Power requirements scale accordingly: the RX 6500 XT has a 107 W TDP with a single 6-pin connector and a 300 W suggested PSU, while the RX 7800 XT has a 263 W TDP with dual 8-pin connectors and a 600 W suggested PSU. Display outputs also differ: the RX 6500 XT offers 1x HDMI 2.1 and 1x DisplayPort 1.4a, while the RX 7800 XT offers 1x HDMI 2.1a and 3x DisplayPort 2.1. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7800 XT is 267 mm long, 111 mm tall, and 50 mm wide; the RX 6500 XT’s dimensions are not listed. The RX 7800 XT is active in production, while the RX 6500 XT is end-of-life, with respective launch MSRPs of 499 USD and 199 USD.