Radeon HD 6790 vs Radeon R9 295X2

Intro

Compare those specifications to the Radeon R9 295X2, which comes with clock 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 Texture Address Units 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

As far as performance goes, the Radeon R9 295X2 should in theory be a lot 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 should be much (approximately 966%) better at texture filtering than the Radeon HD 6790. (explain)

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

Pixel Rate

The Radeon R9 295X2 should be much (about 870%) faster with regards to AA than the Radeon HD 6790, and also will be capable of handling higher screen resolutions more effectively. (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 (in units of MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.