GeForce 8800 GTS (G80) 640MB vs Radeon R5 M330

Intro

Compare those specifications to the Radeon R5 M330, which comes with GPU clock speed of 1030 MHz, and 2048 MB of DDR3 RAM set to run at 900 MHz through a 64-bit bus. It also is made up of 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 8800 GTS (G80) 640MB should in theory perform much faster than the Radeon R5 M330 overall. (explain)

GeForce 8800 GTS (G80) 640MB		63360 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 48960 (340%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB should be just a bit (about 20%) faster with regards to AF than the Radeon R5 M330. (explain)

GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 4024 (20%)

Pixel Rate

The GeForce 8800 GTS (G80) 640MB is a lot (more or less 25%) faster with regards to FSAA than the Radeon R5 M330, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 2020 (25%)

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 (measured in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.