GeForce GTX 650 vs Radeon HD 6770

Intro

Compare all that to the Radeon HD 6770, which has core speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 650		2263 points
Radeon HD 6770		1520 points
	Difference: 743 (49%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6770		108 Watts
	Difference: 44 Watts (69%)

Memory Bandwidth

The GeForce GTX 650 should in theory be just a bit faster than the Radeon HD 6770 in general. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 12800 (19%)

Texel Rate

The Radeon HD 6770 is a small bit (more or less 6%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 2144 (6%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 is the winner, though only just barely. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 2528 (18%)

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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated 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 card will be at 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 the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.