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Radeon HD 7870 XT vs Radeon RX 6600 XT
Intro
The Radeon HD 7870 XT features a clock frequency of 925 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 96 Texture Address Units, and 32 ROPs.Compare those specs to the Radeon RX 6600 XT, which comes with core speeds of 1968 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR6 RAM. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon RX 6600 XT |
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160 Watts |
| Radeon HD 7870 XT |
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185 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon RX 6600 XT should in theory be much better than the Radeon HD 7870 XT in general. (explain)
| Radeon RX 6600 XT |
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262144 MB/sec |
| Radeon HD 7870 XT |
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192000 MB/sec |
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Texel Rate
The Radeon RX 6600 XT is quite a bit (about 184%) faster with regards to AF than the Radeon HD 7870 XT. (explain)| Radeon RX 6600 XT |
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251904 Mtexels/sec |
| Radeon HD 7870 XT |
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88800 Mtexels/sec |
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Pixel Rate
If using lots of anti-aliasing is important to you, then the Radeon RX 6600 XT is a better choice, and very much so. (explain)| Radeon RX 6600 XT |
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125952 Mpixels/sec |
| Radeon HD 7870 XT |
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29600 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 HD 7870 XTAmazon.com
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Radeon RX 6600 XTAmazon.com
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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 HD 7870 XT | Radeon RX 6600 XT |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | November 2012 | August 2021 |
| Code Name | Tahiti LE | Navi 23 XT |
| Memory | 2048 MB | 8192 MB |
| Core Speed | 925 MHz | 1968 MHz |
| Memory Speed | 6000 MHz | 4000 GB/s |
| Power (Max TDP) | 185 watts | 160 watts |
| Bandwidth | 192000 MB/sec | 262144 MB/sec |
| Texel Rate | 88800 Mtexels/sec | 251904 Mtexels/sec |
| Pixel Rate | 29600 Mpixels/sec | 125952 Mpixels/sec |
| Unified Shaders | 1536 | 2048 |
| Texture Mapping Units | 96 | 128 |
| Render Output Units | 32 | 64 |
| Bus Type | GDDR5 | GDDR6 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 28 nm | 7 nm |
| Transistors | 4313 million | 11060 million |
| Bus | PCIe 3.0 x16 | PCIe 4.0 x16 |
| DirectX Version | DirectX 11.1 | DirectX 12 |
| OpenGL Version | OpenGL 4.3 | OpenGL 4.6 |
Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 7870 XTAmazon.com
Check prices at:
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Radeon RX 6600 XTAmazon.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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