AMD Radeon RX 7800 XT 16GB vs AMD Radeon RX 7900 XT 20GB
The Radeon RX 7900 XT delivers 38% more FP16 throughput than the Radeon RX 7800 XT (103 vs 75 TFLOPS dense). The Radeon RX 7900 XT also carries 4 GB more memory (20 GB vs 16 GB).
AMD Radeon RX 7800 XT 16GB
Full specs →AMD Radeon RX 7900 XT 20GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
The Radeon RX 7800 XT is the newer part: RDNA 3, launched in 2023, against the Radeon RX 7900 XT's RDNA 3 from 2022. Newer architectures typically add lower-precision formats and better throughput per watt, so check the precision rows your workload actually uses.
Dense throughput for the Radeon RX 7800 XT against the Radeon RX 7900 XT: FP32 37 vs 52 TFLOPS, FP16 75 vs 103 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 16 GB against 20 GB, fed at 624 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 263 W for the Radeon RX 7800 XT and 315 W for the Radeon RX 7900 XT. At FP32 that works out to 0.14 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 7800 XT faster than the Radeon RX 7900 XT?
At FP16 precision the Radeon RX 7900 XT reaches 103 TFLOPS dense against 75 TFLOPS for the Radeon RX 7800 XT. The performance table on this page lists every published precision for both GPUs.
Which has more memory, the Radeon RX 7800 XT or the Radeon RX 7900 XT?
The Radeon RX 7900 XT carries 20 GB of VRAM versus 16 GB for the Radeon RX 7800 XT. Memory bandwidth is 624 GB/s for the Radeon RX 7800 XT and 800 GB/s for the Radeon RX 7900 XT.
How much power do the Radeon RX 7800 XT and the Radeon RX 7900 XT draw?
The Radeon RX 7800 XT is rated at 263 W TDP and the Radeon RX 7900 XT at 315 W. On FP32 throughput per watt, the Radeon RX 7900 XT is the more efficient part.
Get Comparison Updates
New GPUs added weekly. Be the first to see how they compare.