Sapphire RX 7900 XT
The Sapphire RX 7900 XT is Sapphire’s version of the Radeon RX 7900 XT. It measures 276 mm, close to the 276 mm reference design. Below you’ll find every current retailer price and the full spec sheet.
Prices update regularly and may differ at the retailer. This page contains affiliate links.
Gaming performance
Gaming score: geometric mean of in-game FPS, normalized so the RTX 5090 = 100. Render and synthetic scores are in the Benchmarks section below.
Gaming scores are normalised performance indexes derived from Tom’s Hardware’s published GPU benchmarks. Performance per dollar and per watt are our own calculations on top of that data.
1080p Gaming
1440p Gaming
4K Gaming
The Radeon RX 7900 XT scores 81.3 at 1080p, 63.8 at 1440p, and 51.6 at 4K on a scale where 100 = the fastest GPU we test (RTX 5090). These scores apply to all board versions of this chip.
Benchmarks
Standardized benchmark scores for this chip, each compared to the fastest card we track and linked to its source. They apply to every board version.
3D & gaming
Render
Compute & AI
Where to buy
Every in-stock retailer we track, cheapest first.
- AmazonCHEAPEST$925.99In stock
| Retailer | Price | Availability | Updated | Buy |
|---|---|---|---|---|
| AmazonCHEAPEST | $925.99 | In Stock | |
Specifications
GPU chip
- Chip
- Radeon RX 7900 XT
- Architecture
- RDNA 3 Navi 31
- Process node
- TSMC N5/N6
- Shader cores
- 5,376
- SM count
- 84
- Texture units (TMUs)
- 336
- Render outputs (ROPs)
- 192
- RT cores
- 84 · 2nd gen
- Tensor / AI cores
- 168 · 1st gen
Memory
- VRAM
- 20GB GDDR6
- Memory bus
- 320-bit
- Bandwidth
- 800 GB/s
- Memory speed
- 20 Gbps
- Infinity Cache
- 80 MB
GPU die
- Foundry
- TSMC
- Die size
- 529 mm²
- Transistors
- 57.7 billion
- Generation
- Radeon RX 7000
Display & connectivity
- Max resolution
- 7680 × 4320
- Max displays
- 4
- HDCP
- 2.3
APIs & software
- DirectX
- 12 Ultimate (12.2)
- Vulkan
- 1.3
- OpenGL
- 4.6
- OpenCL
- 2.2
- Shader model
- 6.8
Platform features
- Upscaling
- FSR 4.1 (ML upscaling), FSR 3 Frame Generation
- Also runs
- XeSS 2, XeSS 2 Frame Generation
- Resizable BAR
- Yes
Video encoding & decoding
| Codec | Encode | Decode |
|---|---|---|
| H.264 / AVC | Supported | Supported |
| H.265 / HEVC | Supported | Supported |
| AV1 | Supported | Supported |
| VP9 | Not supported | Supported |
Encoder: VCN 4.0 · Decoder: VCN 4.0
Board
- Boost clock
- 2400 MHz(reference)
- Base clock
- 1500 MHz
- TDP
- 300W
- Recommended PSU
- 750W
- Power connectors
- 2 8-pin
Physical
- Cooling
- Air
- Warranty
- 2 years
- Length
- 276 mm
- Slot width
- 2 slots
- Outputs
- 1 HDMI 2.1a, 2 Displayport 2.1, 1 USB Type-C
Identifiers
- MPN
- 21323-01-20G
- ASIN
- B0BMNGT8XM
- EAN
- 0840777088616
- UPC
- 840777088616
Chip-level specs — cores, memory, die, APIs, media engine and platform features — are shared by every version of the Radeon RX 7900 XT. The Board, Physical and Identifier boxes are specific to this Sapphire variant; a struck-through value shows where it differs from the reference design.
Local AI performance
What the Sapphire RX 7900 XT can run on your own machine, and how fast. Capacity and speed come from the Radeon RX 7900 XT chip, so they are the same on every board version; price per GB is this board’s own.
Largest model it can run (8K context)
- Q4 (the usual choice, near-original quality)
- ~26B
- Q8 (closer to original, half the model size)
- ~15B
- FP16 (unquantised, for training and research)
- ~8.5B
Parameter counts the card holds with room for an 8K conversation, counting the model weights plus its attention cache. A longer conversation needs more memory, so it lowers these figures.
Speed & value
- Speed, 8B model at Q4
- 103-121 tok/s
- Memory bandwidth
- 800 GB/s
- Price per GB of VRAM
- $46.30
Generation speed tracks memory bandwidth, because every word produced reads the whole model from memory. Shown as a range.
Models that fit, at Q4
| Model | Size | Memory needed | Est. speed |
|---|---|---|---|
| Lfm2 24B | 23.8B | 15.1GB | — |
| Magistral 24B | 23.6B | 16.5GB | 35-41 tok/s |
| Devstral 24B | 23.6B | 16.5GB | 35-41 tok/s |
Popular models small enough for this card at Q4, one per family. Speed is left blank for mixture-of-experts models, where a bandwidth estimate is not reliable enough to publish.
Choosing a card for AI? Compare every GPU for local AI, including setups that pool the memory of two or more cards.
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