GeForce GTX 750 vs Radeon HD 3870 1GB

Intro

Compare that to the Radeon HD 3870 1GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 775 MHz. The GDDR4 memory works at a speed of 1125 MHz on this particular card. It features 320(64x5) SPUs as well as 16 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 3870 1GB		106 Watts
	Difference: 51 Watts (93%)

Memory Bandwidth

Theoretically, the GeForce GTX 750 should be just a bit faster than the Radeon HD 3870 1GB in general. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 3870 1GB		72000 MB/sec
	Difference: 8000 (11%)

Texel Rate

The GeForce GTX 750 will be a lot (more or less 163%) better at texture filtering than the Radeon HD 3870 1GB. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 3870 1GB		12400 Mtexels/sec
	Difference: 20240 (163%)

Pixel Rate

The GeForce GTX 750 should be quite a bit (about 32%) better at FSAA than the Radeon HD 3870 1GB, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 750		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 largest amount of data (measured in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's 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 better 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.