GeForce 9600 GT 1GB vs Radeon HD 4770

Intro

Compare those specs to the Radeon HD 4770, which features a GPU core clock speed of 750 MHz, and 512 MB of GDDR5 RAM running at 800 MHz through a 128-bit bus. It also features 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
GeForce 9600 GT 1GB		95 Watts
	Difference: 15 Watts (19%)

Memory Bandwidth

Theoretically speaking, the GeForce 9600 GT 1GB should be just a bit faster than the Radeon HD 4770 overall. (explain)

GeForce 9600 GT 1GB		57600 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 6400 (13%)

Texel Rate

The Radeon HD 4770 will be a small bit (about 15%) better at AF than the GeForce 9600 GT 1GB. (explain)

Radeon HD 4770		24000 Mtexels/sec
GeForce 9600 GT 1GB		20800 Mtexels/sec
	Difference: 3200 (15%)

Pixel Rate

The Radeon HD 4770 should be a bit (approximately 15%) more effective at AA than the GeForce 9600 GT 1GB, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 4770		12000 Mpixels/sec
GeForce 9600 GT 1GB		10400 Mpixels/sec
	Difference: 1600 (15%)

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 largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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.