Radeon HD 6770 vs Radeon R9 295X2

Intro

Compare those specifications to the Radeon R9 295X2, which comes with a GPU core clock speed of 1018 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 512-bit bus. It also features 2816 Stream Processors, 176 TAUs, and 64 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 R9 295X2		21205 points
Radeon HD 6770		1520 points
	Difference: 19685 (1295%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
Radeon R9 295X2		500 Watts
	Difference: 392 Watts (363%)

Memory Bandwidth

The Radeon R9 295X2 should theoretically be much faster than the Radeon HD 6770 in general. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 572800 (852%)

Texel Rate

The Radeon R9 295X2 should be a lot (more or less 895%) better at texture filtering than the Radeon HD 6770. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 322336 (895%)

Pixel Rate

The Radeon R9 295X2 will be quite a bit (about 805%) faster with regards to full screen anti-aliasing than the Radeon HD 6770, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 115904 (805%)

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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.