GeForce 9500 GT 512MB GDDR3 vs Radeon HD 7790

Intro

Compare those specs to the Radeon HD 7790, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory works at a speed of 1500 MHz on this model. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3		50 Watts
Radeon HD 7790		85 Watts
	Difference: 35 Watts (70%)

Memory Bandwidth

Performance-wise, the Radeon HD 7790 should theoretically be a lot superior to the GeForce 9500 GT 512MB GDDR3 overall. (explain)

Radeon HD 7790		96000 MB/sec
GeForce 9500 GT 512MB GDDR3		25600 MB/sec
	Difference: 70400 (275%)

Texel Rate

The Radeon HD 7790 will be much (about 536%) faster with regards to texture filtering than the GeForce 9500 GT 512MB GDDR3. (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce 9500 GT 512MB GDDR3		8800 Mtexels/sec
	Difference: 47200 (536%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7790 is the winner, by a large margin. (explain)

Radeon HD 7790		16000 Mpixels/sec
GeForce 9500 GT 512MB GDDR3		4400 Mpixels/sec
	Difference: 11600 (264%)

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 max amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high 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 of the card by the core clock speed of the chip. The higher this number, the better the video card will be at 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 that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.