GeForce GTX 750 vs Radeon HD 5870

Intro

Compare that to the Radeon HD 5870, which uses a 40 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this particular card. It features 1600(320x5) SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 5870		188 Watts
	Difference: 133 Watts (242%)

Memory Bandwidth

The Radeon HD 5870 should in theory be much faster than the GeForce GTX 750 in general. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 73600 (92%)

Texel Rate

The Radeon HD 5870 will be quite a bit (approximately 108%) faster with regards to texture filtering than the GeForce GTX 750. (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 35360 (108%)

Pixel Rate

The Radeon HD 5870 is a lot (more or less 67%) better at anti-aliasing than the GeForce GTX 750, and able to handle higher screen resolutions better. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 10880 (67%)

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 maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.