GeForce 8800 GTS (G80) 320MB vs Radeon R9 M385X

Intro

Compare all of that to the Radeon R9 M385X, which uses a 28 nm design. AMD has set the core frequency at 1100 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this card. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M385X, in theory, should be quite a bit faster than the GeForce 8800 GTS (G80) 320MB in general. (explain)

Radeon R9 M385X		96000 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 32640 (52%)

Texel Rate

The Radeon R9 M385X will be quite a bit (approximately 150%) more effective at anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 36976 (150%)

Pixel Rate

The Radeon R9 M385X should be much (approximately 72%) better at full screen anti-aliasing than the GeForce 8800 GTS (G80) 320MB, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 M385X		17600 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 7340 (72%)

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 maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed per second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.