GeForce 8600 GT 512MB GDDR3 vs Radeon HD 7750

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB GDDR3		47 Watts
Radeon HD 7750		55 Watts
	Difference: 8 Watts (17%)

Memory Bandwidth

Performance-wise, the Radeon HD 7750 should in theory be a lot superior to the GeForce 8600 GT 512MB GDDR3 in general. (explain)

Radeon HD 7750		72000 MB/sec
GeForce 8600 GT 512MB GDDR3		22400 MB/sec
	Difference: 49600 (221%)

Texel Rate

The Radeon HD 7750 will be a lot (about 196%) better at texture filtering than the GeForce 8600 GT 512MB GDDR3. (explain)

Radeon HD 7750		25600 Mtexels/sec
GeForce 8600 GT 512MB GDDR3		8640 Mtexels/sec
	Difference: 16960 (196%)

Pixel Rate

The Radeon HD 7750 is quite a bit (approximately 196%) faster with regards to full screen anti-aliasing than the GeForce 8600 GT 512MB GDDR3, and should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce 8600 GT 512MB GDDR3		4320 Mpixels/sec
	Difference: 8480 (196%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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