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 memory. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

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

The GeForce GTX 750 Ti should theoretically perform a small bit faster than the Radeon HD 3870 1GB in general. (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 should be quite a bit (about 229%) more effective at 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

The GeForce GTX 750 Ti is much (approximately 32%) faster with regards to FSAA than the Radeon HD 3870 1GB, and will be capable of handling higher resolutions better. (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 max amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.