AMD Radeon PRO W7800

Official identity

Card

AMD Radeon PRO W7800

gfx

gfx1100

RDNA 3

Published VRAM

32 GB

Hardware label, not a bench

Peak bandwidth

576 GB/s

AMD W7800 product page — peak memory bandwidth 576 GB/s (32 GB SKU)

Board power

260 W TBP

AMD W7800 product page — Total Board Power 260 W; 2×8-pin

ROCm matrix

Official

32 GB and a separate 48 GB SKU are both listed. Read the sticker.

Form factor: Active cooler, full-height double-slot, 11 in / 280 mm. AMD W7800 datasheet — Active, 11” (280 mm), Double Slot, Full Height. AMD lists a separate W7800 48 GB SKU (48 GB GDDR6, 864 GB/s, 260 W TBP). Read the sticker. This sheet sizes the 32 GB W7800.

Cited support row: ROCm 10.1.0 compatibility matrix and Linux system requirements. We do not invent a support claim past that listing. AMD product page: PRO W7800. Datasheet: PRO W7800 datasheet. 48 GB SKU: W7800 48 GB.

HSA_OVERRIDE: Not needed on current 10.x.

What fits on this card (256K context)

Shopper verdict at 4K, then follow the pair page for 32K and full context. Q4 and up. No printed prices.

Workstation vs consumer

Built only from cited AMD product-page specs already on this sheet and the consumer /gpus pages. We do not invent a decode number or a street price.

1. 32 GB W7800 vs the 48 GB W7800 SKU

   This sheet sizes the 32 GB W7800 (576 GB/s, 260 W TBP). AMD’s separate W7800 48 GB page cites 48 GB GDDR6, 864 GB/s, and the same 260 W TBP. Read the sticker. Do not use these 32 GB fit rows for the 48 GB SKU.

2. W7800 vs the measured R9700

   Both are 32 GB workstation stickers. The R9700 is gfx1201, 640 GB/s, 300 W TBP, and measured on the local desktop. The W7800 is gfx1100, 576 GB/s, 260 W TBP, official on the cited ROCm 10.1 row — not measured. Same VRAM class is not the same LLVM target.

3. W7800 vs consumer gfx1100

   The RX 7900 XT is 20 GB gfx1100 at 315 W typical board power. The W7800 is 32 GB gfx1100 at 260 W TBP. More VRAM on the workstation sticker; different cooler and driver SKU. We do not invent a price or a decode gap.

What fits in VRAM

llama.cpp, f16 KV, 1 GPU and 2 GPUs (split). Q6 / Q5 / Q4 rows are calculator estimates. UD-Q3_K_XL is a labeled estimate — not a local desktop run. Speed stays not yet measured on our R9700s. Tables cover house 35B, Flash, and every cited /models page. Change quant or context in the calculator.

House 35B Q3 cite: Hugging Face listing for Qwen3.6-35B-A3B-UD-Q3_K_XL.gguf (16.8 GB). Other Q3 rows use the calculator publisher-file note for that model.

System RAM

Minimum system RAM needed and RAM needed at full context for Qwen3.6-35B-A3B on llama.cpp at Q4_K_M, 32K selected and the model’s full context. Estimate until a first-party amdai-bench/run@1 card exists for this SKU. Rounded up to a real DIMM kit. Offload rows on the other /models tables repeat both labels.

llama.cpp-first stack

1. Step 1

   llama.cpp first

   Vulkan and ROCm/HIP are both in scope on this official gfx1100 workstation row. HIP when rocminfo lists gfx1100. Ollama and vLLM are secondary — not the house path for this card.

2. Step 2

   gfx1100 family package

   gfx1100 needs the gfx110x ROCm family package, same pin as the W7900. Do not mix a gfx1201 (R9700 / 9070 XT) or gfx1101 (W7700 / 7800 XT) install. Re-check the cited matrix before you install.

3. Step 3

   32 GB sheet, 48 GB SKU exists

   This sheet sizes the 32 GB W7800. AMD product page: 32 GB GDDR6, 576 GB/s, 260 W TBP. The 48 GB W7800 is a different listing (864 GB/s, 260 W). Read the sticker and open the calculator before you download.

4. Step 4

   Setup, then Stack Lab doctor

   First-run setup is Ubuntu. Open Stack Lab doctor for the gfx110x install family, then record an amdai-bench/run@1 card if you measure this SKU. House daily and Flash profiles are R9700 / local desktop — they do not apply here. Packages are not published yet.

Compare with…

Head-to-head pages use the same VRAM, bandwidth, and calculator fit already on the sheets. Q3 is a labeled estimate. No invented prices. PRO W7800 against the other published sheets:

• Compare GPUs
• vs PRO W6800
• vs PRO W7900
• vs R9700

Also: PRO W7700 · RX 6700 XT · RX 6800 XT · RX 6950 XT · RX 7600 · RX 7600 XT · RX 7700 XT · RX 7800 XT · RX 7900 GRE · RX 7900 XT · RX 7900 XTX · RX 9060 XT · RX 9070 · RX 9070 GRE · RX 9070 XT · Strix Halo