Radeon R7 250 vs Radeon R7 370 4G

Intro

Compare that to the Radeon R7 370 4G, which has a clock frequency of 975 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon R7 370 4G		110 Watts
	Difference: 45 Watts (69%)

Memory Bandwidth

The Radeon R7 370 4G, in theory, should perform a lot faster than the Radeon R7 250 overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 105600 (143%)

Texel Rate

The Radeon R7 370 4G should be a lot (more or less 160%) faster with regards to texture filtering than the Radeon R7 250. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 38400 (160%)

Pixel Rate

The Radeon R7 370 4G will be a lot (about 290%) better at AA than the Radeon R7 250, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 23200 (290%)

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 (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.