GeForce GTX 465 vs Radeon HD 4830 512MB

Intro

Compare all of that to the Radeon HD 4830 512MB, which has core clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
GeForce GTX 465		200 Watts
	Difference: 105 Watts (111%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 465 should in theory be quite a bit better than the Radeon HD 4830 512MB overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 44992 (78%)

Texel Rate

The GeForce GTX 465 is quite a bit (more or less 45%) better at texture filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 8308 (45%)

Pixel Rate

The GeForce GTX 465 should be much (approximately 111%) better at FSAA than the Radeon HD 4830 512MB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 10224 (111%)

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: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core 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 most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.