GeForce GTX 465 vs Radeon HD 7750

Intro

Compare that to the Radeon HD 7750, which has a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GTX 465		200 Watts
	Difference: 145 Watts (264%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 should perform a lot faster than the Radeon HD 7750 overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 30592 (42%)

Texel Rate

The GeForce GTX 465 is a bit (approximately 4%) faster with regards to texture filtering than the Radeon HD 7750. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 1108 (4%)

Pixel Rate

The GeForce GTX 465 should be much (about 52%) better at anti-aliasing than the Radeon HD 7750, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 6624 (52%)

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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR 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 amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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