Radeon HD 7770 vs Radeon R7 260X

Intro

Compare all of that to the Radeon R7 260X, which uses a 28 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 memory runs at a speed of 1625 MHz on this model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R7 260X		4381 points
Radeon HD 7770		3180 points
	Difference: 1201 (38%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R7 260X		115 Watts
	Difference: 35 Watts (44%)

Memory Bandwidth

The Radeon R7 260X, in theory, should perform quite a bit faster than the Radeon HD 7770 in general. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 32000 (44%)

Texel Rate

The Radeon R7 260X should be much (more or less 54%) better at texture filtering than the Radeon HD 7770. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 21600 (54%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 260X is a better choice, but it probably won't make a huge difference. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 1600 (10%)

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 megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, 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 that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.