GeForce 8800 GTS (G80) 640MB vs Radeon R5 M230

Intro

Compare those specifications to the Radeon R5 M230, which makes use of a 28 nm design. AMD has clocked the core frequency at 780 MHz. The DDR3 RAM runs at a frequency of 1000 MHz on this particular card. It features 320 SPUs as well as 20 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 8800 GTS (G80) 640MB should be 296% faster than the Radeon R5 M230 in general, because of its higher data rate. (explain)

GeForce 8800 GTS (G80) 640MB		63360 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 47360 (296%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB will be much (approximately 58%) more effective at AF than the Radeon R5 M230. (explain)

GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 9024 (58%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 GTS (G80) 640MB is superior to the Radeon R5 M230, by far. (explain)

GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 7140 (229%)

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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, 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 most pixels the video card can 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 Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.