GeForce GTX 280 vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which has a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 280 should in theory perform quite a bit faster than the Radeon R9 M380 in general. (explain)

GeForce GTX 280		141696 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 45696 (48%)

Texel Rate

The GeForce GTX 280 should be a small bit (more or less 20%) better at texture filtering than the Radeon R9 M380. (explain)

GeForce GTX 280		48160 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 8160 (20%)

Pixel Rate

The GeForce GTX 280 should be a small bit (more or less 20%) faster with regards to FSAA than the Radeon R9 M380, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 280		19264 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 3264 (20%)

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 (counted in megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of 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 speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.