GeForce GTS 250 1GB vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which has a GPU core clock 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 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M380 should in theory perform much faster than the GeForce GTS 250 1GB overall. (explain)

Radeon R9 M380		96000 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 25600 (36%)

Texel Rate

The GeForce GTS 250 1GB will be a little bit (about 18%) faster with regards to texture filtering than the Radeon R9 M380. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 7232 (18%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M380 is superior to the GeForce GTS 250 1GB, by far. (explain)

Radeon R9 M380		16000 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 4192 (36%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.