GeForce GTX 465 vs Radeon HD 4850 512MB

Intro

Compare all of that to the Radeon HD 4850 512MB, which uses a 55 nm design. AMD has set the core frequency at 625 MHz. The GDDR3 RAM runs at a speed of 993 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB		110 Watts
GeForce GTX 465		200 Watts
	Difference: 90 Watts (82%)

Memory Bandwidth

Theoretically, the GeForce GTX 465 should perform a lot faster than the Radeon HD 4850 512MB overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 39040 (61%)

Texel Rate

The GeForce GTX 465 is a little bit (more or less 7%) more effective at texture filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 1708 (7%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 465 is superior to the Radeon HD 4850 512MB, by far. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 9424 (94%)

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 information (measured in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high 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 clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its 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 - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.