GeForce GTX 460 SE vs Radeon HD 4650 512MB

Intro

Compare all of that to the Radeon HD 4650 512MB, which makes use of a 55 nm design. AMD has set the core speed at 600 MHz. The DDR2 memory is set to run at a speed of 500 MHz on this model. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 95 Watts (173%)

Memory Bandwidth

The GeForce GTX 460 SE should in theory perform much faster than the Radeon HD 4650 512MB overall. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 92800 (580%)

Texel Rate

The GeForce GTX 460 SE should be much (about 63%) more effective at texture filtering than the Radeon HD 4650 512MB. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 12000 (63%)

Pixel Rate

The GeForce GTX 460 SE will be a lot (approximately 333%) faster with regards to full screen anti-aliasing than the Radeon HD 4650 512MB, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 16000 (333%)

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 (in units of MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 processed in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.