AMD Radeon RX 6900 XT vs AMD Radeon RX 7600M Comparison

AMD Radeon RX 7600M and AMD Radeon RX 6900 XT occupy very different segments of the graphics stack, and the recorded data reflects that gap clearly. The RX 7600M is a mobile-first part built on the RDNA 3.0 architecture, while the RX 6900 XT is a desktop flagship from the RDNA 2.0 generation. Their benchmark profiles, compute resources, and physical design points are distinct, and the database shows exactly where each part excels.

Head-to-Head Benchmarks

The only directly comparable benchmark in the database is the Geekbench OpenCL test, and the result is decisive. The AMD Radeon RX 6900 XT scores 187,673, while the AMD Radeon RX 7600M scores 63,775. The delta percentage is -66, meaning the RX 7600M trails the RX 6900 XT by 66% in this raw compute workload. In absolute terms, the RX 6900 XT is roughly 2.94 times faster in this specific test.

This outcome is consistent with the silicon differences. The RX 6900 XT carries 5,120 shading units, 320 texture mapping units, and 128 render output units, versus 1,792 shading units, 112 TMUs, and 64 ROPs on the RX 7600M. The compute throughput numbers align: the RX 6900 XT delivers 23.04 TFLOPS FP32, while the RX 7600M produces 17.27 TFLOPS FP32. The gap in shading units is 2.86x, which tracks closely with the 2.94x OpenCL score difference.

The RX 6900 XT also holds advantages in memory bandwidth. Its 256-bit bus and 16 GB of GDDR6 yield 512.0 GB/s, while the RX 7600M's 128-bit bus and 8 GB of GDDR6 provide 256.0 GB/s. That is exactly a 2x bandwidth advantage for the desktop card, which matters for memory-bound workloads.

However, the RX 7600M is not without its own merits. Its boost clock is higher at 2410 MHz versus 2250 MHz on the RX 6900 XT, and its base clock is lower at 1500 MHz versus 1825 MHz. The mobile part also uses a newer manufacturing process, 6 nm versus 7 nm, both from TSMC. The RX 7600M's transistor density is higher at 65.2M per mm² compared to 51.5M per mm² on the RX 6900 XT, reflecting the architectural efficiency gains of RDNA 3.0.

In the broader context of the database, the RX 7600M sits at the 89th percentile of all GPUs, while the RX 6900 XT sits at the 86th percentile. That is a curious inversion: the mobile chip ranks higher in percentile despite losing the head-to-head test. This is because the percentile metric accounts for the entire benchmark suite, and the RX 7600M has a single OpenCL score, while the RX 6900 XT has multiple scores including PassMark and 3DMark results, some of which are lower. The RX 6900 XT's average benchmark score is 50,951, which drags its percentile down relative to its peak performance.

Where Each One Wins

The RX 6900 XT wins in raw compute and memory-intensive scenarios. Its OpenCL score of 187,673 places it far ahead of the RX 7600M's 63,775. For workloads that leverage FP32 throughput, such as scientific simulation, video rendering, or heavy GPGPU tasks, the RX 6900 XT's 23.04 TFLOPS and 512.0 GB/s bandwidth are decisive. The database also shows strong results for the RX 6900 XT in other APIs: it scores 177,021 in Geekbench Metal, 148,525 in Geekbench Vulkan, and 26,732 in PassMark G3D. These scores indicate broad competence across different rendering and compute stacks.

The RX 7600M wins on efficiency and form factor. Its TDP is 90 W, versus 300 W for the RX 6900 XT. That is a 3.33x difference in power draw, making the mobile part viable for thin-and-light laptops. The RX 7600M has no power connectors and is listed as an integrated graphics package (IGP), meaning it relies on the motherboard for power delivery. The RX 6900 XT requires two 8-pin connectors and a 700 W suggested PSU, which anchors it to a desktop chassis with substantial power headroom.

The RX 7600M also wins on architectural recency. It uses RDNA 3.0 on a 6 nm node, whereas the RX 6900 XT uses RDNA 2.0 on a 7 nm node. The newer architecture brings a higher transistor density, 65.2M per mm² versus 51.5M per mm², which suggests better area efficiency. The RX 7600M's boost clock of 2410 MHz is also higher than the RX 6900 XT's 2250 MHz, indicating that the smaller chip can sustain higher frequencies.

In terms of production status, the RX 7600M is active, while the RX 6900 XT is end-of-life. That means the mobile part is still in the current product stack, whereas the desktop flagship has been discontinued. The RX 6900 XT's successor is listed as Navi III, and its predecessor is Navi, placing it in a known lineage. The RX 7600M's predecessor is Polaris Mobile, and it has no successor listed, so it represents the current mobile generation.

The Verdict

From the recorded data, the AMD Radeon RX 6900 XT is the clear performance winner. Its OpenCL score of 187,673 is 66% higher than the RX 7600M's 63,775, and its compute resources are substantially larger across every metric: shading units, TMUs, ROPs, and RT cores. The RX 6900 XT has 80 RT cores versus 28 on the RX 7600M, and its pixel rate is 288.0 GPixel/s versus 154.2 GPixel/s. Anyone needing maximum compute throughput, high bandwidth for large datasets, or heavy rasterization should choose the RX 6900 XT based on these numbers.

The AMD Radeon RX 7600M is the right choice for constrained power envelopes and portable systems. Its 90 W TDP makes it suitable for laptops, and its IGP form factor means it can be integrated without external power connectors. The RX 7600M also ranks higher in percentile versus all GPUs at 89, compared to 86 for the RX 6900 XT, suggesting that its single OpenCL result is more competitive relative to its peers than the desktop card's mixed suite. For users who prioritize battery life, thermal headroom, and a modern architecture, the RX 7600M is the logical pick.

The database does not show any benchmark wins for the RX 7600M in direct comparison. The head-to-head record is 0 wins for the RX 7600M and 1 win for the RX 6900 XT. That is a one-sided result, but it should be interpreted with the context of their intended use cases: the mobile part is not designed to outrun a 300 W desktop flagship, it is designed to deliver capable performance within a fraction of the power budget.

FAQ

Q: Which GPU has the higher score in Geekbench OpenCL?

A: The AMD Radeon RX 6900 XT scores 187,673, while the AMD Radeon RX 7600M scores 63,775. The delta percentage is -66, indicating the RX 7600M is 66% slower in this test.

Q: How do the memory bandwidths compare?

A: The RX 6900 XT has a 256-bit bus with 512.0 GB/s bandwidth, while the RX 7600M has a 128-bit bus with 256.0 GB/s bandwidth. The desktop card has exactly double the memory bandwidth.

Q: What is the power consumption difference?

A: The RX 7600M has a TDP of 90 W, while the RX 6900 XT has a TDP of 300 W. The RX 6900 XT also requires two 8-pin power connectors and a 700 W suggested PSU, whereas the RX 7600M uses no power connectors.

Q: Which GPU has more shading units?

A: The RX 6900 XT has 5,120 shading units, compared to 1,792 on the RX 7600M. This is a 2.86x difference in favor of the desktop card.

Q: Are both GPUs based on the same architecture?

A: No. The RX 7600M uses RDNA 3.0 on a 6 nm TSMC process, while the RX 6900 XT uses RDNA 2.0 on a 7 nm TSMC process. Both are manufactured by TSMC but with different nodes.

Q: What is the production status of each GPU?

A: The RX 7600M is listed as active, while the RX 6900 XT is end-of-life. The RX 6900 XT has a successor in Navi III, while the RX 7600M has no successor listed.

Architecture Differences

The architectural split between these two GPUs is substantial. The RX 7600M is built on the RDNA 3.0 architecture with the Navi 33 chip, codenamed Hotpink Bonefish, and belongs to the Navi Mobile generation. The RX 6900 XT uses RDNA 2.0 with the Navi 21 chip and belongs to the Navi II generation. The process nodes differ: 6 nm for the RX 7600M versus 7 nm for the RX 6900 XT, both from TSMC.

Transistor counts show the scale difference. The RX 6900 XT has 26,800 million transistors on a 520 mm² die, while the RX 7600M has 13,300 million transistors on a 204 mm² die. The desktop chip is roughly 2x larger in die area and has 2.02x more transistors. However, the mobile chip achieves a higher transistor density at 65.2M per mm² versus 51.5M per mm², indicating the newer architecture packs more logic into less space.

Compute resources diverge sharply. The RX 6900 XT has 5,120 shading units, 320 TMUs, 128 ROPs, and 80 RT cores. The RX 7600M has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores. The desktop card leads by 2.86x in shading units, 2.86x in TMUs, 2x in ROPs, and 2.86x in RT cores. The pixel rate is 288.0 GPixel/s on the RX 6900 XT versus 154.2 GPixel/s on the RX 7600M, and texture rates are 720.0 GTexel/s versus 269.9 GTexel/s.

Clock speeds behave differently. The RX 7600M has a higher boost clock at 2410 MHz versus 2250 MHz on the RX 6900 XT, but the desktop card has a higher base clock at 1825 MHz versus 1500 MHz. The game clock is also higher on the desktop part at 2015 MHz versus 2070 MHz on the mobile part, which is reversed from the boost clock. Memory clocks are identical at 2000 MHz with 16 Gbps effective for both.

Memory configuration is a major differentiator. The RX 6900 XT offers 16 GB of GDDR6 on a 256-bit bus, yielding 512.0 GB/s. The RX 7600M offers 8 GB of GDDR6 on a 128-bit bus, yielding 256.0 GB/s. Both use GDDR6, but the desktop card has double the capacity and double the bandwidth.

Form factors and power delivery are polar opposites. The RX 7600M is an IGP with no slot width specified, no power connectors, and no dimensions listed. The RX 6900 XT is a triple-slot card measuring 267 mm in length, 120 mm in height, and 50 mm in width, with two 8-pin power connectors and a 700 W suggested PSU. The RX 7600M's display outputs are portable-device dependent, while the RX 6900 XT offers 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical. The bus interface is PCIe 4.0 x16 for both. The RX 7600M launched on 2023-01-03, while the RX 6900 XT launched on 2020-10-27, placing the mobile part roughly two years later in the product cycle. The RX 6900 XT has a launch MSRP of 999 USD, which the database records once. The RX 7600M has no launch MSRP listed.