GeForce 8800 Ultra vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which uses a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory runs at a frequency of 1125 MHz on this specific model. It features 512 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 116 Watts (211%)

Memory Bandwidth

The GeForce 8800 Ultra, in theory, should perform quite a bit faster than the Radeon HD 7750 overall. (explain)

GeForce 8800 Ultra		103680 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 31680 (44%)

Texel Rate

The GeForce 8800 Ultra should be a lot (about 53%) faster with regards to texture filtering than the Radeon HD 7750. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 13568 (53%)

Pixel Rate

The GeForce 8800 Ultra should be a small bit (more or less 15%) more effective at AA than the Radeon HD 7750, and able to handle higher screen resolutions better. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 1888 (15%)

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 max amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.