GeForce GTX 750 vs Radeon HD 3850 256MB

Intro

Compare those specs to the Radeon HD 3850 256MB, which comes with clock speeds of 668 MHz on the GPU, and 828 MHz on the 256 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 3850 256MB		75 Watts
	Difference: 20 Watts (36%)

Memory Bandwidth

In theory, the GeForce GTX 750 should perform quite a bit faster than the Radeon HD 3850 256MB overall. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 3850 256MB		52992 MB/sec
	Difference: 27008 (51%)

Texel Rate

The GeForce GTX 750 will be quite a bit (more or less 205%) more effective at anisotropic filtering than the Radeon HD 3850 256MB. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 3850 256MB		10688 Mtexels/sec
	Difference: 21952 (205%)

Pixel Rate

The GeForce GTX 750 should be much (approximately 53%) better at AA than the Radeon HD 3850 256MB, and able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 3850 256MB		10688 Mpixels/sec
	Difference: 5632 (53%)

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 data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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