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Radeon HD 7870 vs Radeon HD 7950 3GB
Intro
The Radeon HD 7870 comes with a GPU clock speed of 1000 MHz, and the 2048 MB of GDDR5 memory is set to run at 1200 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.Compare those specifications to the Radeon HD 7950 3GB, which features GPU core speed of 800 MHz, and 3072 MB of GDDR5 memory set to run at 1250 MHz through a 384-bit bus. It also is comprised of 1792 Stream Processors, 112 Texture Address Units, and 32 Raster Operation Units.
Benchmarks
These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.
Zcash Mining Hash Rate
| Radeon HD 7950 3GB |
|
229 Sol/s |
| Radeon HD 7870 |
|
172 Sol/s |
|
|
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7870 |
|
175 Watts |
| Radeon HD 7950 3GB |
|
200 Watts |
|
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Memory Bandwidth
Performance-wise, the Radeon HD 7950 3GB should theoretically be a lot better than the Radeon HD 7870 overall. (explain)
| Radeon HD 7950 3GB |
|
240000 MB/sec |
| Radeon HD 7870 |
|
153600 MB/sec |
|
|
Texel Rate
The Radeon HD 7950 3GB should be just a bit (approximately 12%) faster with regards to AF than the Radeon HD 7870. (explain)| Radeon HD 7950 3GB |
|
89600 Mtexels/sec |
| Radeon HD 7870 |
|
80000 Mtexels/sec |
|
|
Pixel Rate
The Radeon HD 7870 should be quite a bit (more or less 25%) better at AA than the Radeon HD 7950 3GB, and should be capable of handling higher resolutions better. (explain)| Radeon HD 7870 |
|
32000 Mpixels/sec |
| Radeon HD 7950 3GB |
|
25600 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
Radeon HD 7950 3GB
Specifications
| Model | Radeon HD 7870 | Radeon HD 7950 3GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | March 2012 | January 2012 |
| Code Name | Pitcairn XT | Tahiti Pro |
| Memory | 2048 MB | 3072 MB |
| Core Speed | 1000 MHz | 800 MHz |
| Memory Speed | 4800 MHz | 5000 MHz |
| Power (Max TDP) | 175 watts | 200 watts |
| Bandwidth | 153600 MB/sec | 240000 MB/sec |
| Texel Rate | 80000 Mtexels/sec | 89600 Mtexels/sec |
| Pixel Rate | 32000 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 1280 | 1792 |
| Texture Mapping Units | 80 | 112 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 384-bit |
| Fab Process | 28 nm | 28 nm |
| Transistors | 2800 million | 4313 million |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11.1 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.2 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 7870
Radeon HD 7950 3GB
Comments
2 Responses to “Radeon HD 7870 vs Radeon HD 7950 3GB”[...] be oc'ed around 1100/1600 to get 60 fps (Ultra Settings) in BF3 and your card is < than a 7950 Radeon HD 7870 vs Radeon HD 7950 3GB – Performance Comparison Benchmarks @ Hardware Compare Reply With Quote « Previous Thread | Next Thread [...]
Alright, so I have a single 1080p display. I want the better video card to max out any games with. I'm not really that interested in AA but I'd sure like to max it out. I'm ready to pay up anything for any build/model of those 2 cards (DD, GHz etc).
Thanks a lot in advance!