GeForce GTX 465 vs Radeon HD 5870

Intro

Compare all of that to the Radeon HD 5870, which comes with a core clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is made up of 1600(320x5) SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870		188 Watts
GeForce GTX 465		200 Watts
	Difference: 12 Watts (6%)

Memory Bandwidth

The Radeon HD 5870, in theory, should perform quite a bit faster than the GeForce GTX 465 in general. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 51008 (50%)

Texel Rate

The Radeon HD 5870 is quite a bit (approximately 155%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 41292 (155%)

Pixel Rate

The Radeon HD 5870 is much (approximately 40%) better at FSAA than the GeForce GTX 465, and should be capable of handling higher resolutions better. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 7776 (40%)

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 information (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.