GeForce 8800 Ultra vs Radeon R9 M270X

Intro

Compare that to the Radeon R9 M270X, which features a GPU core clock speed of 725 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 8800 Ultra should theoretically perform a lot faster than the Radeon R9 M270X overall. (explain)

GeForce 8800 Ultra		103680 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 31680 (44%)

Texel Rate

The GeForce 8800 Ultra will be quite a bit (approximately 35%) more effective at texture filtering than the Radeon R9 M270X. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 10168 (35%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 Ultra is superior to the Radeon R9 M270X, and very much so. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 3088 (27%)

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 largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 are applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.