GeForce 8600 GT 256MB DDR2 vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which makes use of a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular card. It features 720 SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 256MB DDR2		47 Watts
Radeon HD 6750		86 Watts
	Difference: 39 Watts (83%)

Memory Bandwidth

The Radeon HD 6750 should in theory be a lot faster than the GeForce 8600 GT 256MB DDR2 in general. (explain)

Radeon HD 6750		64000 MB/sec
GeForce 8600 GT 256MB DDR2		12800 MB/sec
	Difference: 51200 (400%)

Texel Rate

The Radeon HD 6750 should be much (about 202%) faster with regards to anisotropic filtering than the GeForce 8600 GT 256MB DDR2. (explain)

Radeon HD 6750		26100 Mtexels/sec
GeForce 8600 GT 256MB DDR2		8640 Mtexels/sec
	Difference: 17460 (202%)

Pixel Rate

The Radeon HD 6750 will be a lot (more or less 169%) faster with regards to FSAA than the GeForce 8600 GT 256MB DDR2, and also able to handle higher resolutions better. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce 8600 GT 256MB DDR2		4320 Mpixels/sec
	Difference: 7280 (169%)

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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.