GeForce GTX 465 vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this specific card. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
GeForce GTX 465		200 Watts
	Difference: 25 Watts (14%)

Memory Bandwidth

In theory, the Radeon HD 5830 is 25% quicker than the GeForce GTX 465 in general, because of its greater bandwidth. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 25408 (25%)

Texel Rate

The Radeon HD 5830 should be a lot (about 68%) better at anisotropic filtering than the GeForce GTX 465. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 18092 (68%)

Pixel Rate

The GeForce GTX 465 will be much (about 52%) more effective at full screen anti-aliasing than the Radeon HD 5830, and capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 5830		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: Bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's 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 fill 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 get to the max fill rate.