GeForce GTX 295 vs Radeon R9 380 4G

Intro

Compare those specifications to the Radeon R9 380 4G, which has clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 4G		190 Watts
GeForce GTX 295		289 Watts
	Difference: 99 Watts (52%)

Memory Bandwidth

The GeForce GTX 295 should theoretically be much faster than the Radeon R9 380 4G in general. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 380 4G		182400 MB/sec
	Difference: 41376 (23%)

Texel Rate

The Radeon R9 380 4G should be a little bit (about 18%) faster with regards to AF than the GeForce GTX 295. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 16480 (18%)

Pixel Rate

The GeForce GTX 295 will be a bit (about 4%) more effective at AA than the Radeon R9 380 4G, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 380 4G		31040 Mpixels/sec
	Difference: 1216 (4%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher 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 that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.