Radeon HD 7770 vs Radeon R7 370 4G

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R7 370 4G		110 Watts
	Difference: 30 Watts (38%)

Memory Bandwidth

As far as performance goes, the Radeon R7 370 4G should in theory be much better than the Radeon HD 7770 overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R7 370 4G will be quite a bit (more or less 56%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 22400 (56%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 370 4G is a better choice, by a large margin. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 15200 (95%)

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 (counted in MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.