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GeForce GTX 275 vs Radeon HD 7750


The GeForce GTX 275 has a core clock frequency of 633 MHz and a GDDR3 memory speed of 1134 MHz. It also makes use of a 448-bit memory bus, and makes use of a 55 nm design. It is comprised of 240 SPUs, 80 Texture Address Units, and 28 Raster Operation Units.

Compare those specs to the Radeon HD 7750, which comes with a clock frequency of 800 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 512 SPUs, 32 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce GTX 275 219 Watts
Difference: 164 Watts (298%)

Memory Bandwidth

In theory, the GeForce GTX 275 will be 76% quicker than the Radeon HD 7750 overall, because of its higher data rate. (explain)

GeForce GTX 275 127008 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 55008 (76%)

Texel Rate

The GeForce GTX 275 will be quite a bit (about 98%) more effective at anisotropic filtering than the Radeon HD 7750. (explain)

GeForce GTX 275 50640 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 25040 (98%)

Pixel Rate

The GeForce GTX 275 is much (approximately 38%) better at anti-aliasing than the Radeon HD 7750, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 275 17724 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 4924 (38%)

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

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GeForce GTX 275

Radeon HD 7750

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.


Display Specifications

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Model GeForce GTX 275 Radeon HD 7750
Manufacturer nVidia AMD
Year April 9, 2009 February 2012
Code Name G200b Cape Verde Pro
Memory 896 MB 1024 MB
Core Speed 633 MHz 800 MHz
Memory Speed 2268 MHz 4500 MHz
Power (Max TDP) 219 watts 55 watts
Bandwidth 127008 MB/sec 72000 MB/sec
Texel Rate 50640 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 240 512
Texture Mapping Units 80 32
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 1500 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.


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