Radeon R7 250X 2GB vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory runs at a speed of 1400 MHz on this card. It features 1280 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon R9 270X		180 Watts
	Difference: 85 Watts (89%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270X should theoretically be a lot superior to the Radeon R7 250X 2GB in general. (explain)

Radeon R9 270X		179200 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270X will be a lot (more or less 100%) more effective at AF than the Radeon R7 250X 2GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 40000 (100%)

Pixel Rate

The Radeon R9 270X will be quite a bit (about 100%) faster with regards to full screen anti-aliasing than the Radeon R7 250X 2GB, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 16000 (100%)

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 max amount of information (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 maximum fill rate.