GeForce GTX 465 vs Radeon R9 380 4G

Intro

Compare those specs to the Radeon R9 380 4G, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 RAM runs at a frequency of 1425 MHz on this specific model. 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 465		200 Watts
	Difference: 10 Watts (5%)

Memory Bandwidth

Performance-wise, the Radeon R9 380 4G should in theory be quite a bit better than the GeForce GTX 465 in general. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 79808 (78%)

Texel Rate

The Radeon R9 380 4G will be much (approximately 307%) faster with regards to anisotropic filtering than the GeForce GTX 465. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 81932 (307%)

Pixel Rate

The Radeon R9 380 4G is quite a bit (more or less 60%) more effective at full screen anti-aliasing than the GeForce GTX 465, and should be able to handle higher resolutions better. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 11616 (60%)

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 maximum amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.