Geforce GTX 670 vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 RAM works at a frequency of 1500 MHz on this particular model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Geforce GTX 670 should be 100% faster than the Radeon R9 M380 in general, because of its greater data rate. (explain)

Geforce GTX 670		192000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 96000 (100%)

Texel Rate

The Geforce GTX 670 should be quite a bit (approximately 156%) more effective at texture filtering than the Radeon R9 M380. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 62480 (156%)

Pixel Rate

The Geforce GTX 670 will be much (approximately 83%) faster with regards to full screen anti-aliasing than the Radeon R9 M380, and should be able to handle higher resolutions without losing too much performance. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 13280 (83%)

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 information (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.