AMD Radeon RX 7900 XTX 24GB vs AMD Radeon RX 7900 XT 20GB
The Radeon RX 7900 XTX delivers 19% more FP16 throughput than the Radeon RX 7900 XT (123 vs 103 TFLOPS dense). The Radeon RX 7900 XTX also carries 4 GB more memory (24 GB vs 20 GB).
AMD Radeon RX 7900 XTX 24GB
Full specs →AMD Radeon RX 7900 XT 20GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2022: the Radeon RX 7900 XTX on RDNA 3 and the Radeon RX 7900 XT on RDNA 3.
Dense throughput for the Radeon RX 7900 XTX against the Radeon RX 7900 XT: FP64 1.5 vs 1.3 TFLOPS, FP32 61 vs 52 TFLOPS, FP16 123 vs 103 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 24 GB against 20 GB, fed at 960 GB/s versus 800 GB/s. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.
Power budgets are 355 W for the Radeon RX 7900 XTX and 315 W for the Radeon RX 7900 XT. At FP32 that works out to 0.17 against 0.16 TFLOPS per watt.
For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.
Frequently asked questions
Is the Radeon RX 7900 XTX faster than the Radeon RX 7900 XT?
At FP16 precision the Radeon RX 7900 XTX reaches 123 TFLOPS dense against 103 TFLOPS for the Radeon RX 7900 XT. The performance table on this page lists every published precision for both GPUs.
Which has more memory, the Radeon RX 7900 XTX or the Radeon RX 7900 XT?
The Radeon RX 7900 XTX carries 24 GB of VRAM versus 20 GB for the Radeon RX 7900 XT. Memory bandwidth is 960 GB/s for the Radeon RX 7900 XTX and 800 GB/s for the Radeon RX 7900 XT.
How much power do the Radeon RX 7900 XTX and the Radeon RX 7900 XT draw?
The Radeon RX 7900 XTX is rated at 355 W TDP and the Radeon RX 7900 XT at 315 W. On FP32 throughput per watt, the Radeon RX 7900 XTX is the more efficient part.
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