GeForce 8800 GT 512MB vs Radeon R7 240

Intro

Compare all that to the Radeon R7 240, which makes use of a 28 nm design. AMD has clocked the core frequency at 730 MHz. The DDR3 memory is set to run at a speed of 900 MHz on this model. It features 320 SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 75 Watts (250%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GT 512MB will be 100% quicker than the Radeon R7 240 in general, due to its higher bandwidth. (explain)

GeForce 8800 GT 512MB		57600 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The GeForce 8800 GT 512MB should be a lot (approximately 130%) faster with regards to texture filtering than the Radeon R7 240. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 19000 (130%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GT 512MB is the winner, by a large margin. (explain)

GeForce 8800 GT 512MB		9600 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 3760 (64%)

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 data (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.