GeForce GTX 275 vs Radeon HD 7750

Intro

Compare those specifications to the Radeon HD 7750, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is comprised of 512 Stream Processors, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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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

The GeForce GTX 275, in theory, should perform quite a bit faster than the Radeon HD 7750 in general. (explain)

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

Texel Rate

The GeForce GTX 275 is quite a bit (more or less 98%) faster with regards to texture 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 will be a lot (more or less 38%) faster with regards to AA than the Radeon HD 7750, and also should be capable of handling higher resolutions better. (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

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.