GeForce 8800 GT 512MB vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which has a core clock speed of 730 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 320 SPUs, 20 Texture Address Units, 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

The GeForce 8800 GT 512MB should in theory be much faster than the Radeon R7 240 overall. (explain)

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

Texel Rate

The GeForce 8800 GT 512MB is a lot (approximately 130%) faster with regards to anisotropic 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 a better choice, 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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the 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 most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.