GeForce GTX 750 vs Radeon HD 3690/3830

Intro

Compare that to the Radeon HD 3690/3830, which features core speeds of 668 MHz on the GPU, and 828 MHz on the 256 MB of GDDR3 RAM. It features 320(64x5) SPUs along with 16 TAUs 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 3690/3830		75 Watts
	Difference: 20 Watts (36%)

Memory Bandwidth

In theory, the GeForce GTX 750 should be much faster than the Radeon HD 3690/3830 in general. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 3690/3830		26496 MB/sec
	Difference: 53504 (202%)

Texel Rate

The GeForce GTX 750 will be a lot (about 205%) faster with regards to AF than the Radeon HD 3690/3830. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 3690/3830		10688 Mtexels/sec
	Difference: 21952 (205%)

Pixel Rate

The GeForce GTX 750 is a lot (more or less 53%) more effective at FSAA than the Radeon HD 3690/3830, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 750		16320 Mpixels/sec
Radeon HD 3690/3830		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 maximum amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.