GeForce GTX 750 Ti vs Radeon HD 4850 X2 512MB

Intro

Compare those specifications to the Radeon HD 4850 X2 512MB, which comes with GPU clock speed of 625 MHz, and 512 MB of GDDR3 memory running at 993 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
Radeon HD 4850 X2 512MB		250 Watts
	Difference: 190 Watts (317%)

Memory Bandwidth

In theory, the Radeon HD 4850 X2 512MB should perform a lot faster than the GeForce GTX 750 Ti overall. (explain)

Radeon HD 4850 X2 512MB		127104 MB/sec
GeForce GTX 750 Ti		86400 MB/sec
	Difference: 40704 (47%)

Texel Rate

The Radeon HD 4850 X2 512MB will be much (about 23%) better at AF than the GeForce GTX 750 Ti. (explain)

Radeon HD 4850 X2 512MB		50000 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 9200 (23%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 4850 X2 512MB is superior to the GeForce GTX 750 Ti, by a large margin. (explain)

Radeon HD 4850 X2 512MB		20000 Mpixels/sec
GeForce GTX 750 Ti		16320 Mpixels/sec
	Difference: 3680 (23%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.