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GeForce 9600 GT 512MB vs Radeon HD 6750

Intro

The GeForce 9600 GT 512MB features a GPU clock speed of 650 MHz, and the 512 MB of GDDR3 RAM is set to run at 900 MHz through a 256-bit bus. It also is comprised of 64 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare all that to the Radeon HD 6750, which comes with a clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce 9600 GT 512MB		95 Watts
	Difference: 9 Watts (10%)

Memory Bandwidth

In theory, the Radeon HD 6750 should be 11% quicker than the GeForce 9600 GT 512MB overall, due to its greater bandwidth. (explain)

Radeon HD 6750		64000 MB/sec
GeForce 9600 GT 512MB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The Radeon HD 6750 should be much (about 25%) better at texture filtering than the GeForce 9600 GT 512MB. (explain)

Radeon HD 6750		26100 Mtexels/sec
GeForce 9600 GT 512MB		20800 Mtexels/sec
	Difference: 5300 (25%)

Pixel Rate

The Radeon HD 6750 is a bit (more or less 12%) faster with regards to full screen anti-aliasing than the GeForce 9600 GT 512MB, and capable of handling higher screen resolutions better. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce 9600 GT 512MB		10400 Mpixels/sec
	Difference: 1200 (12%)

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

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GeForce 9600 GT 512MB

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Radeon HD 6750

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Specifications

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Model	GeForce 9600 GT 512MB	Radeon HD 6750
Manufacturer	nVidia	AMD
Year	Feb 2008	January 2011
Code Name	G94a/b	Juniper Pro
Memory	512 MB	512 MB
Core Speed	650 MHz	725 MHz
Memory Speed	1800 MHz	4000 MHz
Power (Max TDP)	95 watts	86 watts
Bandwidth	57600 MB/sec	64000 MB/sec
Texel Rate	20800 Mtexels/sec	26100 Mtexels/sec
Pixel Rate	10400 Mpixels/sec	11600 Mpixels/sec
Unified Shaders	64	720
Texture Mapping Units	32	36
Render Output Units	16	16
Bus Type	GDDR3	GDDR5
Bus Width	256-bit	128-bit
Fab Process	65/55 nm	40 nm
Transistors	505 million	1040 million
Bus	PCIe x16 2.0	PCIe x16
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.0	OpenGL 4.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 processed per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

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