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AMD Instinct MI100 vs AMD Radeon RX 7900 XTX: Comparison
Instinct MI100 vs Radeon RX 7900 XTX boost clock compared
Start with boost clock, because it is the widest measured gap between them: Instinct MI100 1502 MHz against Radeon RX 7900 XTX 2500 MHz, 40% in favour of Radeon RX 7900 XTX. Memory bus width runs the same way, 4096 bit on the Instinct MI100 versus 384 bit on the Radeon RX 7900 XTX, another win for Instinct MI100. Memory bandwidth runs the same way, 1200 GB/s on the Instinct MI100 versus 960 GB/s on the Radeon RX 7900 XTX, another win for Instinct MI100. Add tdp to that, 300 W on the Instinct MI100 versus 355 W on the Radeon RX 7900 XTX, and the pattern holds. Instinct MI100 also leads on slot width, 2 on the Instinct MI100 versus 2.5 on the Radeon RX 7900 XTX.
Who each one is for
The Instinct MI100 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 the wrong buy for overclocking-focused enthusiasts (reference clocks only). Avoid it for buyers wanting a specific retail card with cooler and warranty details. it is not the pick for anyone who prioritizes ray tracing quality or DLSS-tier upscaling. It also earns its place with buyers who want a 24GB frame buffer and flagship rasterization without RTX 4090 pricing. Our rating of the Radeon RX 7900 XTX (8/10): AMD's chiplet flagship: 24GB and strong rasterization for far less than NVIDIA's top card, with ray tracing as the clear weak spot.
Frequently asked questions
Do the Instinct MI100 and Radeon RX 7900 XTX differ on card length?
Yes. Card Length reads 267 mm on the Instinct MI100 versus 287 mm on the Radeon RX 7900 XTX.
Is the GPU Brand the same on the Instinct MI100 and Radeon RX 7900 XTX?
It is. Both are listed at AMD, so it is not a reason to pick one over the other.
Specs and benchmarks
GPU Brand
- AMD Instinct MI100
- AMD
- AMD Radeon RX 7900 XTX
- AMD
Product Type
- AMD Instinct MI100
- Datacenter Accelerator
- AMD Radeon RX 7900 XTX
- Desktop Add-In Card
Series
- AMD Instinct MI100
- Instinct
- AMD Radeon RX 7900 XTX
- Radeon RX 7000
Board Partner
- AMD Instinct MI100
- Reference
- AMD Radeon RX 7900 XTX
- Reference
Tier
- AMD Instinct MI100
- Datacenter
- AMD Radeon RX 7900 XTX
- Flagship
Memory Type
- AMD Instinct MI100
- HBM2
- AMD Radeon RX 7900 XTX
- GDDR6Best
Boost Clock
- AMD Instinct MI100
- 1502 MHz-40%
- AMD Radeon RX 7900 XTX
- 2500 MHzBest
TDP
- AMD Instinct MI100
- 300 WBest
- AMD Radeon RX 7900 XTX
- 355 W-18%
Architecture
- AMD Instinct MI100
- CDNA
- AMD Radeon RX 7900 XTX
- RDNA 3
Card Length
- AMD Instinct MI100
- 267 mmBest
- AMD Radeon RX 7900 XTX
- 287 mm-7%
Slot Width
- AMD Instinct MI100
- 2Best
- AMD Radeon RX 7900 XTX
- 2.5-25%
Shader Units
- AMD Instinct MI100
- 7680
- AMD Radeon RX 7900 XTX
- 6144
Compute Blocks
- AMD Instinct MI100
- 120
- AMD Radeon RX 7900 XTX
- 96
Memory Bus Width
- AMD Instinct MI100
- 4096 bitBest
- AMD Radeon RX 7900 XTX
- 384 bit-91%
Memory Bandwidth
- AMD Instinct MI100
- 1200 GB/sBest
- AMD Radeon RX 7900 XTX
- 960 GB/s-20%
Launch Date
- AMD Instinct MI100
- 11/16/2020
- AMD Radeon RX 7900 XTX
- 2022-12-13
Which one should you pick?
Choose AMD Instinct MI100 if you want the lower TDP (300 W vs 355 W), the lower card length (267 mm vs 287 mm) and the lower slot width (2 vs 2.5).
Choose AMD Radeon RX 7900 XTX if you want the higher boost clock (2500 MHz vs 1502 MHz).
Price comparison
| Retailer | AMD Instinct MI100 | AMD Radeon RX 7900 XTX |
|---|---|---|
| Consumercarts listing | $999.00 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 7900 XTX
8 / 10 Expert Rating
AMD's chiplet flagship: 24GB and strong rasterization for far less than NVIDIA's top card, with ray tracing as the clear weak spot.