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AMD Radeon PRO W6800 32GB vs AMD Radeon RX 6900 XT 16GB

The Radeon RX 6900 XT delivers 29% more FP16 throughput than the Radeon PRO W6800 (46 vs 36 TFLOPS dense). The Radeon PRO W6800 counters with 16 GB more memory (32 GB vs 16 GB).

Radeon PRO W6800: RDNA 2, 2021 Radeon RX 6900 XT: RDNA 2, 2020
FP16 dense lead
+29%
Radeon RX 6900 XT: 46 vs 36 TFLOPS
Memory
32 vs 16 GB
16 GB more for the Radeon PRO W6800
Bandwidth
512 GB/s vs 512 GB/s
Even
TDP
250 W vs 300 W
Radeon PRO W6800 draws 50 W less
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AMD Radeon PRO W6800 32GB vs AMD Radeon RX 6900 XT 16GB

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AMD Radeon PRO W6800 32GB

Full specs →

What is the AMD Radeon PRO W6800?

The Radeon PRO W6800 is a GPU from AMD on the RDNA 2 architecture, an accelerator for AI training, inference and high-performance computing. It is a PCIe add-in card, so it fits standard servers and workstations. Radeon PRO W6800 full specifications →

Can I rent the Radeon PRO W6800 in the cloud?

Flopper is not tracking any live rental listings for the Radeon PRO W6800 yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the Radeon PRO W6800 compare with other accelerators?

This page sets the Radeon PRO W6800 against the Radeon RX 6900 XT. The Radeon PRO W6800 is the newer generation of the two. Both are AMD parts, and both ship as a PCIe card, so they fit the same class of system. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the Radeon PRO W6800 figures come from?

Every Radeon PRO W6800 figure on this page traces to AMD's own datasheet or specification table. How Flopper verifies specifications →

AMD Radeon RX 6900 XT 16GB

Leads on FP16 Full specs →

What is the AMD Radeon RX 6900 XT?

The Radeon RX 6900 XT is a GPU from AMD on the RDNA 2 architecture, an accelerator for AI training, inference and high-performance computing. It is a PCIe add-in card, so it fits standard servers and workstations. Radeon RX 6900 XT full specifications →

Can I rent the Radeon RX 6900 XT in the cloud?

Flopper is not tracking any live rental listings for the Radeon RX 6900 XT yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the Radeon RX 6900 XT compare with other accelerators?

This page sets the Radeon RX 6900 XT against the Radeon PRO W6800. The Radeon RX 6900 XT is the older generation of the two. Both are AMD parts, and both ship as a PCIe card, so they fit the same class of system. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the Radeon RX 6900 XT figures come from?

Every Radeon RX 6900 XT figure on this page traces to AMD's own datasheet or specification table. How Flopper verifies specifications →

Specifications

Radeon PRO W6800
Radeon RX 6900 XT
Architecture
RDNA 2RDNA 2
Launch Year
20212020
Form Factor
PCIePCIe
Memory
32 GB16 GB
Memory Bandwidth
512 GB/s512 GB/s
TDP
250 W300 W
Process Node
7nm7nm

Performance (TFLOPS)

Radeon PRO W6800
Radeon RX 6900 XT
1.1 TFLOPS No verified data available
18 TFLOPS 23 TFLOPS
No verified data available No verified data available
No verified data available No verified data available
36 TFLOPS 46 TFLOPS
No verified data available No verified data available
FP6
No verified data available No verified data available
No verified data available No verified data available
No verified data available No verified data available

Figures are dense. Where a vendor publishes a figure it sits under the dense one and never decides a winner. Hover any precision for its definition, or read the GPU glossary.

FLOPS by Precision

What actually differs

The Radeon PRO W6800 is the newer part: RDNA 2 (2021) against the Radeon RX 6900 XT's RDNA 2 (2020).

The Radeon PRO W6800 carries 16 GB more memory (32 GB against 16 GB), so larger models fit on one GPU before you shard. Bandwidth is 512 GB/s against 512 GB/s, which sets the ceiling on decode speed.

Power is 250 W against 300 W, and at FP32 the Radeon RX 6900 XT does more work per watt. Weight the FP8 and FP16 rows for LLM work and the FP64 row for HPC.

New to the terms? The glossary explains FP64, FP32, FP16, Sparsity and TFLOPS.

Frequently asked questions

Is the Radeon PRO W6800 faster than the Radeon RX 6900 XT?

At FP16 precision the Radeon RX 6900 XT reaches 46 TFLOPS dense against 36 TFLOPS for the Radeon PRO W6800. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the Radeon PRO W6800 or the Radeon RX 6900 XT?

Choose the Radeon RX 6900 XT for training and high-throughput inference: it has 29% more FP16 throughput than the Radeon PRO W6800. Choose the Radeon PRO W6800 when the model has to fit on one GPU: it carries 16 GB more memory. The Radeon RX 6900 XT draws 50 W more power, so budget for cooling and power delivery before you commit.

Which has more memory, the Radeon PRO W6800 or the Radeon RX 6900 XT?

The Radeon PRO W6800 carries 32 GB of memory versus 16 GB for the Radeon RX 6900 XT. Memory bandwidth is 512 GB/s for the Radeon PRO W6800 and 512 GB/s for the Radeon RX 6900 XT.

How much power do the Radeon PRO W6800 and the Radeon RX 6900 XT draw?

The Radeon PRO W6800 is rated at 250 W TDP and the Radeon RX 6900 XT at 300 W. On FP32 throughput per watt, the Radeon RX 6900 XT is the more efficient part.

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