Geforce GTX 770 vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which makes use of a 40 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1050 MHz on this card. It features 800 SPUs along with 40 TAUs and 16 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

Geforce GTX 770		7854 points
Radeon HD 6770		1520 points
	Difference: 6334 (417%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
Geforce GTX 770		230 Watts
	Difference: 122 Watts (113%)

Memory Bandwidth

Performance-wise, the Geforce GTX 770 should in theory be much better than the Radeon HD 6770 overall. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 157184 (234%)

Texel Rate

The Geforce GTX 770 should be a lot (approximately 272%) better at AF than the Radeon HD 6770. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 97888 (272%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 770 is superior to the Radeon HD 6770, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 19072 (132%)

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 max amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.