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AMD Instinct MI250 vs AMD Radeon RX 6950 XT: Comparison
What is the difference between Instinct MI250 and Radeon RX 6950 XT?
Start with memory bandwidth, because it is the widest measured gap between them: Instinct MI250 3200 GB/s against Radeon RX 6950 XT 576 GB/s, 82% in favour of Instinct MI250. Tdp runs the same way, 500 W on the Instinct MI250 versus 335 W on the Radeon RX 6950 XT, another win for Radeon RX 6950 XT. Memory bus width runs the same way, 8192 bit on the Instinct MI250 versus 256 bit on the Radeon RX 6950 XT, another win for Instinct MI250. Add boost clock to that, 1700 MHz on the Instinct MI250 versus 2310 MHz on the Radeon RX 6950 XT, and the pattern holds. They differ on compute blocks too, 208 on the Instinct MI250 versus 80 on the Radeon RX 6950 XT.
Which should you buy, Instinct MI250 or Radeon RX 6950 XT?
The Instinct MI250 is the one to take for buyers comparing AMD's official reference specifications and researching a chip before choosing a board-partner card, though it is not built for overclocking-focused enthusiasts (reference clocks only). It is the wrong buy for buyers wanting a specific retail card with cooler and warranty details. Buy the Radeon RX 6950 XT for buyers who want AMD's highest-clocked RDNA 2 rasterization performance. It is not the one for anyone who wants a meaningfully bigger upgrade over the RX 6800 XT than a clock-speed bump provides. Our rating of the Radeon RX 6950 XT (7/10): AMD's highest-clocked RDNA 2 card, but a hard sell against the cheaper 6800 XT.
Frequently asked questions
Do the Instinct MI250 and Radeon RX 6950 XT differ on product type?
Yes. Product Type reads Datacenter Accelerator on the Instinct MI250 versus Desktop Add-In Card on the Radeon RX 6950 XT.
Is the PCIe Generation the same on the Instinct MI250 and Radeon RX 6950 XT?
It is. Both are listed at PCIe 4.0, so it is not a reason to pick one over the other.
Specs and benchmarks
Product Type
- AMD Instinct MI250
- Datacenter Accelerator
- AMD Radeon RX 6950 XT
- Desktop Add-In Card
Memory Type
- AMD Instinct MI250
- HBM2E
- AMD Radeon RX 6950 XT
- GDDR6Best
Boost Clock
- AMD Instinct MI250
- 1700 MHz-26%
- AMD Radeon RX 6950 XT
- 2310 MHzBest
TDP
- AMD Instinct MI250
- 500 W-49%
- AMD Radeon RX 6950 XT
- 335 WBest
Architecture
- AMD Instinct MI250
- CDNA2
- AMD Radeon RX 6950 XT
- RDNA 2 (Navi 21 KXTX)
Process Node
- AMD Instinct MI250
- TSMC 6nm FinFET
- AMD Radeon RX 6950 XT
- TSMC N7
Shader Units
- AMD Instinct MI250
- 13312
- AMD Radeon RX 6950 XT
- 5120
Compute Blocks
- AMD Instinct MI250
- 208
- AMD Radeon RX 6950 XT
- 80
Memory Bus Width
- AMD Instinct MI250
- 8192 bitBest
- AMD Radeon RX 6950 XT
- 256 bit-97%
Memory Bandwidth
- AMD Instinct MI250
- 3200 GB/sBest
- AMD Radeon RX 6950 XT
- 576 GB/s-82%
PCIe Generation
- AMD Instinct MI250
- PCIe 4.0
- AMD Radeon RX 6950 XT
- PCIe 4.0
Launch Date
- AMD Instinct MI250
- 11/08/2021
- AMD Radeon RX 6950 XT
- May 2022
Which one should you pick?
Choose AMD Instinct MI250 if you want the higher memory bus width (8192 bit vs 256 bit) and the higher memory bandwidth (3200 GB/s vs 576 GB/s).
Choose AMD Radeon RX 6950 XT if you want the higher boost clock (2310 MHz vs 1700 MHz) and the lower TDP (335 W vs 500 W).
Price comparison
| Retailer | AMD Instinct MI250 | AMD Radeon RX 6950 XT |
|---|---|---|
| Consumercarts listing | $1,099.00 View on Consumercarts listing |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
AMD Radeon RX 6950 XT
7 / 10 Expert Rating
AMD's highest-clocked RDNA 2 card, but a hard sell against the cheaper 6800 XT.