GeForce GTX 465 vs Radeon HD 4670 1GB

Intro

Compare those specs to the Radeon HD 4670 1GB, which features core speeds of 750 MHz on the GPU, and 1100 MHz on the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 memory. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 465		200 Watts
	Difference: 130 Watts (186%)

Memory Bandwidth

In theory, the GeForce GTX 465 should be much faster than the Radeon HD 4670 1GB in general. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 67392 (191%)

Texel Rate

The GeForce GTX 465 is a bit (approximately 11%) faster with regards to texture filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 2708 (11%)

Pixel Rate

The GeForce GTX 465 will be a lot (approximately 224%) more effective at anti-aliasing than the Radeon HD 4670 1GB, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 13424 (224%)

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 (counted in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.