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Radeon RX 7900 XTX vs Radeon VII
Intro
The Radeon RX 7900 XTX makes use of a 5 nm design. AMD has clocked the core frequency at 1855 MHz. The GDDR6 memory is set to run at a frequency of 2500 MHz on this particular card. It features 6144 SPUs as well as 384 Texture Address Units and 192 Rasterization Operator Units.Compare that to the Radeon VII, which features a core clock frequency of 1400 MHz and a HBM2 memory speed of 1000 MHz. It also makes use of a 4096-bit bus, and makes use of a 7 nm design. It features 3840 SPUs, 240 Texture Address Units, and 64 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon VII |
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295 Watts |
| Radeon RX 7900 XTX |
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355 Watts |
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Memory Bandwidth
In theory, the Radeon VII should be 7% faster than the Radeon RX 7900 XTX in general, because of its higher bandwidth. (explain)
| Radeon VII |
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1048576 MB/sec |
| Radeon RX 7900 XTX |
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983040 MB/sec |
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Texel Rate
The Radeon RX 7900 XTX should be a lot (about 112%) more effective at anisotropic filtering than the Radeon VII. (explain)| Radeon RX 7900 XTX |
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712320 Mtexels/sec |
| Radeon VII |
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336000 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the Radeon RX 7900 XTX is a better choice, and very much so. (explain)| Radeon RX 7900 XTX |
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356160 Mpixels/sec |
| Radeon VII |
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89600 Mpixels/sec |
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Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.
Price Comparison
Radeon RX 7900 XTXAmazon.com
Check prices at:
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Radeon VIIAmazon.com
Check prices at:
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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
Specifications
| Model | Radeon RX 7900 XTX | Radeon VII |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | December 2022 | 2019 |
| Code Name | Navi 31 XTX | Vega 20 XT |
| Memory | 24576 MB | 16384 MB |
| Core Speed | 1855 MHz | 1400 MHz |
| Memory Speed | 2500 GB/s | 1000 MHz |
| Power (Max TDP) | 355 watts | 295 watts |
| Bandwidth | 983040 MB/sec | 1048576 MB/sec |
| Texel Rate | 712320 Mtexels/sec | 336000 Mtexels/sec |
| Pixel Rate | 356160 Mpixels/sec | 89600 Mpixels/sec |
| Unified Shaders | 6144 | 3840 |
| Texture Mapping Units | 384 | 240 |
| Render Output Units | 192 | 64 |
| Bus Type | GDDR6 | HBM2 |
| Bus Width | 384-bit | 4096-bit |
| Fab Process | 5 nm | 7 nm |
| Transistors | 57700 million | 13230 million |
| Bus | PCIe 4.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 12 | DirectX 12 |
| OpenGL Version | OpenGL 4.6 | OpenGL 4.6 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Radeon RX 7900 XTXAmazon.com
Check prices at:
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Radeon VIIAmazon.com
Check prices at:
|
Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
|
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