GeForce 8800 Ultra vs Radeon R5 M255

Intro

Compare those specifications to the Radeon R5 M255, which features GPU core speed of 940 MHz, and 2048 MB of DDR3 memory set to run at 1000 MHz through a 64-bit bus. It also features 320 Stream Processors, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 8800 Ultra should perform quite a bit faster than the Radeon R5 M255 in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 87680 (548%)

Texel Rate

The GeForce 8800 Ultra should be a lot (approximately 108%) faster with regards to AF than the Radeon R5 M255. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 20368 (108%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 Ultra is superior to the Radeon R5 M255, and very much so. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 7168 (95%)

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 information (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core 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 is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.