GeForce GTX 460 vs Radeon HD 4670 512MB

Intro

Compare all of that to the Radeon HD 4670 512MB, which makes use of a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 memory is set to run at a speed of 1000 MHz on this particular model. It features 320(64x5) SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 460		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

The GeForce GTX 460 should theoretically be a lot faster than the Radeon HD 4670 512MB overall. (explain)

GeForce GTX 460		86400 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 54400 (170%)

Texel Rate

The GeForce GTX 460 will be much (more or less 58%) better at anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 460		37800 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

The GeForce GTX 460 will be a lot (approximately 170%) better at anti-aliasing than the Radeon HD 4670 512MB, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 10200 (170%)

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 MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus 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 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, 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 amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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.