Radeon HD 7770 vs Radeon R9 270X

Intro

Compare all that to the Radeon R9 270X, which has core clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

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 R9 270X		6590 points
Radeon HD 7770		3180 points
	Difference: 3410 (107%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R9 270X		180 Watts
	Difference: 100 Watts (125%)

Memory Bandwidth

Performance-wise, the Radeon R9 270X should theoretically be a lot superior to the Radeon HD 7770 overall. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270X will be much (approximately 100%) faster with regards to anisotropic filtering than the Radeon HD 7770. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 40000 (100%)

Pixel Rate

The Radeon R9 270X should be much (approximately 100%) better at full screen anti-aliasing than the Radeon HD 7770, and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 7770		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 largest amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the 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 graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.