AMD Radeon RX 6900 XT vs AMD Radeon RX 9070 GRE Comparison

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 9070 GRE holds a higher average benchmark score of 57,367 compared to the RX 6900 XT’s 50,951. The 9070 GRE also ranks at the 87th percentile among all GPUs, while the 6900 XT sits at the 86th percentile.

Q: How do the two cards compare in the 3DMark Steel Nomad DX12 test?

A: The RX 9070 GRE scores 5,424 in 3DMark Steel Nomad DX12, which is 33% higher than the RX 6900 XT’s 4,079. This is the largest single-benchmark win for the newer card.

Q: In which benchmark does the RX 6900 XT outperform the RX 9070 GRE?

A: The RX 6900 XT wins decisively in Geekbench OpenCL, scoring 187,673 versus the RX 9070 GRE’s 109,309. That is a 41.8% advantage for the older card in this compute-oriented test.

Q: What are the memory specifications of each card?

A: The RX 9070 GRE comes with 12 GB of GDDR6 on a 192-bit bus, delivering 432.0 GB/s of bandwidth. The RX 6900 XT has 16 GB of GDDR6 on a 256-bit bus, providing 512.0 GB/s of bandwidth.

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

A: The RX 9070 GRE is built on TSMC’s 4 nm process, while the RX 6900 XT uses TSMC’s 7 nm process. The 9070 GRE packs 53,900 million transistors on a 357 mm² die, whereas the 6900 XT has 26,800 million transistors on a larger 520 mm² die.

Q: Which card has a higher boost clock?

A: The RX 9070 GRE boosts to 2790 MHz, notably higher than the RX 6900 XT’s 2250 MHz boost. The 9070 GRE also has a higher game clock at 2220 MHz versus 2015 MHz on the 6900 XT.

The Verdict

The data points to a clear split: the RX 9070 GRE is the modern pick for DX12 gaming workloads, while the RX 6900 XT remains a compute-heavy alternative with more memory. The 9070 GRE wins the only shared gaming-oriented benchmark (3DMark Steel Nomad DX12) by 33%, and it does so while drawing 220 W versus the 6900 XT’s 300 W. It also uses a dual-slot design, whereas the 6900 XT requires triple-slot clearance.

However, the RX 6900 XT is not obsolete. Its Geekbench OpenCL score is 41.8% higher, and its 16 GB frame buffer with 512.0 GB/s bandwidth gives it a capacity edge for large data sets. The 6900 XT also supports Geekbench Metal and Vulkan tests, while the 9070 GRE’s benchmark list only includes OpenCL and 3DMark. For users prioritizing raw compute throughput over gaming efficiency, the 6900 XT is the data-backed choice.

The 9070 GRE is the better all-rounder for current-generation game loads, especially given its 4 nm node, higher boost clock, and PCIe 5.0 interface. The 6900 XT, despite being end-of-life, still holds value in compute scenarios and memory-heavy tasks. Pick the 9070 GRE for modern DX12 performance and efficiency; pick the 6900 XT for OpenCL compute and larger VRAM capacity.

Head-to-Head Benchmarks

The head-to-head results are starkly one-sided in different directions. In 3DMark Steel Nomad DX12, the RX 9070 GRE posts 5,424 points against the RX 6900 XT’s 4,079, yielding a 33% delta in favor of the newer card. This test stresses modern rendering paths, and the 9070 GRE’s RDNA 4.0 architecture with 48 ray accelerators clearly outpaces the 6900 XT’s 80 ray accelerators in this workload — a sign that architectural efficiency trumps raw core count in DX12.

In Geekbench OpenCL, the tables turn completely. The RX 6900 XT scores 187,673, which is 41.8% higher than the RX 9070 GRE’s 109,309. This is a massive margin, driven by the 6900 XT’s 5,120 shading units versus 3,072 on the 9070 GRE, along with its higher texture rate of 720.0 GTexel/s compared to 535.7 GTexel/s. The older card’s FP16 throughput of 46.08 TFLOPS (2:1 ratio) also dwarfs the 9070 GRE’s 34.28 TFLOPS (1:1), which likely contributes to the OpenCL gap.

Notably, the 6900 XT has additional benchmark data points — Geekbench Metal (177,021), Geekbench Vulkan (148,525), and multiple Passmark tests — that the 9070 GRE lacks in the fact pack. These extra results show the 6900 XT’s versatility across APIs, but they do not factor into the head-to-head comparison, which stands at one win each.

Specification Differences

The two cards diverge sharply on paper. The RX 9070 GRE uses a 192-bit memory bus with 12 GB of GDDR6 and 432.0 GB/s bandwidth; the RX 6900 XT uses a 256-bit bus with 16 GB of GDDR6 and 512.0 GB/s bandwidth. Shading units differ by a wide margin: 3,072 on the 9070 GRE versus 5,120 on the 6900 XT. TMUs are 192 versus 320, and ROPs are 96 versus 128, respectively.

Clock speeds favor the newer card: the 9070 GRE has a base clock of 1420 MHz, boost of 2790 MHz, and game clock of 2220 MHz, while the 6900 XT operates at 1825 MHz base, 2250 MHz boost, and 2015 MHz game clock. Pixel rate is slightly higher on the 6900 XT (288.0 GPixel/s) than the 9070 GRE (267.8 GPixel/s), but texture rate favors the 6900 XT at 720.0 GTexel/s versus 535.7 GTexel/s.

Power and physical specs differ too: the 9070 GRE has a TDP of 220 W with a suggested 550 W PSU, while the 6900 XT draws 300 W and suggests a 700 W PSU. The 9070 GRE is dual-slot, the 6900 XT is triple-slot. Both use 2x 8-pin power connectors. The 9070 GRE uses PCIe 5.0 x16, while the 6900 XT uses PCIe 4.0 x16. Display outputs vary: the 9070 GRE has 1x HDMI 2.1b and 3x DisplayPort 2.1a, while the 6900 XT offers 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C.

Architecture Differences

The architectural gap is generational. The RX 9070 GRE is built on RDNA 4.0, using the Navi 48 chip on TSMC’s 4 nm node. The RX 6900 XT uses RDNA 2.0 with the Navi 21 chip on TSMC’s 7 nm node. Transistor counts reflect the process leap: 53,900 million on the 9070 GRE versus 26,800 million on the 6900 XT, though the 6900 XT has a larger die (520 mm² versus 357 mm²). Transistor density is nearly three times higher on the 9070 GRE at 151.0M / mm² versus 51.5M / mm².

Ray tracing cores also differ: the 9070 GRE has 48, while the 6900 XT has 80. Yet the 9070 GRE wins the DX12 ray-traced Steel Nomad test, suggesting RDNA 4.0’s ray accelerators are more efficient per core. FP32 compute is higher on the 9070 GRE at 34.28 TFLOPS versus 23.04 TFLOPS on the 6900 XT. FP16 is a different story: the 9070 GRE delivers 34.28 TFLOPS (1:1 ratio), while the 6900 XT hits 46.08 TFLOPS (2:1 ratio), giving the older card a compute advantage in half-precision workloads.

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The 9070 GRE is in the Navi IV (RX 9000) generation, while the 6900 XT belongs to Navi II (RX 6000). The 9070 GRE is actively produced, whereas the 6900 XT is end-of-life. The 9070 GRE’s predecessor is Navi III, and the 6900 XT’s successor is Navi III — a sign the 9070 GRE effectively replaces the 6900 XT in AMD’s lineup.

Where Each One Wins

The RX 9070 GRE wins in modern gaming workloads, particularly DX12 titles that leverage ray tracing and current rendering techniques. Its 33% lead in 3DMark Steel Nomad DX12 demonstrates this clearly, and its higher boost clock (2790 MHz) and lower TDP (220 W) make it the efficiency pick for sustained gaming sessions. The dual-slot cooler and PCIe 5.0 interface also suit newer system builds.

The RX 6900 XT wins in compute-heavy tasks, as evidenced by its 41.8% OpenCL lead. Its 16 GB VRAM and 512.0 GB/s bandwidth provide a buffer advantage for large textures, AI inference, or rendering workloads that exceed 12 GB. The 6900 XT also has a higher pixel rate (288.0 GPixel/s) and texture rate (720.0 GTexel/s), which helps in fill-rate-bound scenarios. Its triple-slot design and 300 W TDP are trade-offs, but for users with adequate cooling and power, the compute ceiling is higher.

For users who game at high refresh rates in DX12, the 9070 GRE is the unambiguous choice. For users who run OpenCL compute, handle large datasets, or need extra VRAM headroom, the 6900 XT remains relevant. The data does not crown a single winner — it points to two distinct use cases, with the 9070 GRE leading in modern gaming and the 6900 XT leading in raw compute throughput.