GeForce GT 320 vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 RAM is set to run at a frequency of 1425 MHz on this particular model. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon R9 380X		190 Watts
	Difference: 147 Watts (342%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X is 622% faster than the GeForce GT 320 overall, because of its higher data rate. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 157120 (622%)

Texel Rate

The Radeon R9 380X is quite a bit (about 858%) faster with regards to texture filtering than the GeForce GT 320. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 111200 (858%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 380X is superior to the GeForce GT 320, by far. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 26720 (619%)

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 max amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card 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 the card's clock speed. 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.