Compare any two graphics cards:
Radeon HD 7950 3GB vs Radeon HD 7970
IntroThe Radeon HD 7950 3GB comes with core clock speeds of 800 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.Compare all that to the Radeon HD 7970, which comes with GPU core speed of 925 MHz, and 3072 MB of GDDR5 RAM running at 1375 MHz through a 384-bit bus. It also features 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthIn theory, the Radeon HD 7970 is 10% quicker than the Radeon HD 7950 3GB overall, due to its greater data rate. (explain)
Texel RateThe Radeon HD 7970 is quite a bit (about 32%) more effective at anisotropic filtering than the Radeon HD 7950 3GB. (explain)
Pixel RateThe Radeon HD 7970 will be a little bit (about 16%) better at anti-aliasing than the Radeon HD 7950 3GB, and should be able to handle higher screen resolutions without losing too much performance. (explain)
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
Display Prices
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
Display Specifications
Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second. Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
Display Prices
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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Comments
7 Responses to “Radeon HD 7950 3GB vs Radeon HD 7970”currently the 7950 has more bang for the buck imo
Ryan this is true, but I have the 7970 Crossfire and it is amazing. Only issue that I have is sudden frame drops for a second or two when I am playing games like Far Cry 3 or Battlefield 3. Frame rate drops from 158 to 49 and for the 7950, I haven't heard of a such issue, but the clocking speeds of the 7950 are better as well.
They are working on fuzzing the frame stuttering issue as we speak. It should enable the cards to communicate better so they don't drop as many frames.
Fixing lol not fuzzing
What is best hd 7990 or 7970 in crossfire?
The 7990 is like 2x 7950 on a single PCB vs 2x 7970 in CFX which means that the 7970s would be a better choice. but for price per preformance the 7990 would be the best deal.
That's not true Rugged. The 7990 has two 7970s on it, NOT two 7950s. The 7990 and 7970 x2 would be approximately equal to each other, depending on the particular brand's clock speeds.