AMD Radeon RX 7900 XT 20GB vs AMD Radeon RX 7900 XTX 24GB
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 XT 20GB
Full specs →AMD Radeon RX 7900 XTX 24GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2022: the Radeon RX 7900 XT on RDNA 3 and the Radeon RX 7900 XTX on RDNA 3.
Dense throughput for the Radeon RX 7900 XT against the Radeon RX 7900 XTX: FP64 1.3 vs 1.5 TFLOPS, FP32 52 vs 61 TFLOPS, FP16 103 vs 123 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 20 GB against 24 GB, fed at 800 GB/s versus 960 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 315 W for the Radeon RX 7900 XT and 355 W for the Radeon RX 7900 XTX. At FP32 that works out to 0.16 against 0.17 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 XT faster than the Radeon RX 7900 XTX?
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 XT or the Radeon RX 7900 XTX?
The Radeon RX 7900 XTX carries 24 GB of VRAM versus 20 GB for the Radeon RX 7900 XT. Memory bandwidth is 800 GB/s for the Radeon RX 7900 XT and 960 GB/s for the Radeon RX 7900 XTX.
How much power do the Radeon RX 7900 XT and the Radeon RX 7900 XTX draw?
The Radeon RX 7900 XT is rated at 315 W TDP and the Radeon RX 7900 XTX at 355 W. On FP32 throughput per watt, the Radeon RX 7900 XTX is the more efficient part.
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