GeForce GTX 750 Ti vs Radeon HD 3870 1GB

Intro

Compare those specifications to the Radeon HD 3870 1GB, which has clock speeds of 775 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR4 RAM. It features 320(64x5) SPUs as well as 16 TAUs 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 3870 1GB		106 Watts
	Difference: 46 Watts (77%)

Memory Bandwidth

In theory, the GeForce GTX 750 Ti should perform a little bit faster than the Radeon HD 3870 1GB overall. (explain)

GeForce GTX 750 Ti		86400 MB/sec
Radeon HD 3870 1GB		72000 MB/sec
	Difference: 14400 (20%)

Texel Rate

The GeForce GTX 750 Ti will be much (approximately 229%) faster with regards to texture filtering than the Radeon HD 3870 1GB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 3870 1GB		12400 Mtexels/sec
	Difference: 28400 (229%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 750 Ti is superior to the Radeon HD 3870 1GB, by a large margin. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
Radeon HD 3870 1GB		12400 Mpixels/sec
	Difference: 3920 (32%)

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 information (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.