Radeon HD 7770 vs Radeon R9 295X2

Intro

Compare those specs to the Radeon R9 295X2, which comes with core speeds of 1018 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 TAUs and 64 Rasterization Operator Units.

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 R9 295X2		21205 points
Radeon HD 7770		3180 points
	Difference: 18025 (567%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R9 295X2		500 Watts
	Difference: 420 Watts (525%)

Memory Bandwidth

As far as performance goes, the Radeon R9 295X2 should theoretically be quite a bit superior to the Radeon HD 7770 overall. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 568000 (789%)

Texel Rate

The Radeon R9 295X2 will be quite a bit (more or less 796%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 318336 (796%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 295X2 is the winner, by a large margin. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 114304 (714%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface in one second. The number is worked out 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 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.