GeForce GT 320 vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which comes with a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also features a 256-bit bus, and uses a 28 nm design. It features 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon R9 270X		180 Watts
	Difference: 137 Watts (319%)

Memory Bandwidth

In theory, the Radeon R9 270X will be 609% faster than the GeForce GT 320 overall, due to its greater data rate. (explain)

Radeon R9 270X		179200 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 153920 (609%)

Texel Rate

The Radeon R9 270X will be a lot (more or less 517%) faster with regards to texture filtering than the GeForce GT 320. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 67040 (517%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 270X is a better choice, and very much so. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 27680 (641%)

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 data (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure 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 filling the screen with pixels (the image). The actual pixel fill 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 max fill rate.