Radeon HD 6790 vs Radeon R9 295X2

Intro

Compare all that to the Radeon R9 295X2, which has core clock speeds of 1018 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2816 SPUs along with 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 6790		2150 points
	Difference: 19055 (886%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
Radeon R9 295X2		500 Watts
	Difference: 350 Watts (233%)

Memory Bandwidth

Performance-wise, the Radeon R9 295X2 should theoretically be quite a bit superior to the Radeon HD 6790 overall. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 505600 (376%)

Texel Rate

The Radeon R9 295X2 is a lot (more or less 966%) faster with regards to anisotropic filtering than the Radeon HD 6790. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 324736 (966%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 295X2 is superior to the Radeon HD 6790, by far. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 116864 (870%)

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 largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be applied per second. This is worked out 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.