GeForce GTS 450 vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which has GPU core speed of 1000 MHz, and 4096 MB of GDDR5 RAM set to run at 1500 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M380 should perform a lot faster than the GeForce GTS 450 overall. (explain)

Radeon R9 M380		96000 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 38272 (66%)

Texel Rate

The Radeon R9 M380 will be much (about 60%) faster with regards to AF than the GeForce GTS 450. (explain)

Radeon R9 M380		40000 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 14944 (60%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M380 is a better choice, by far. (explain)

Radeon R9 M380		16000 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 3472 (28%)

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 largest amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.