GeForce GTX 465 vs Radeon HD 4750

Intro

Compare that to the Radeon HD 4750, which uses a 40 nm design. AMD has set the core speed at 730 MHz. The GDDR5 RAM is set to run at a frequency of 800 MHz on this specific model. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 465		200 Watts
	Difference: 125 Watts (167%)

Memory Bandwidth

The GeForce GTX 465 should in theory perform much faster than the Radeon HD 4750 in general. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 51392 (100%)

Texel Rate

The GeForce GTX 465 will be a small bit (approximately 14%) faster with regards to texture filtering than the Radeon HD 4750. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 3348 (14%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 465 is the winner, and very much so. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 7744 (66%)

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 max amount of information (in units of MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.