GeForce GTS 450 vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which makes use of a 40 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 memory works at a frequency of 1050 MHz on this specific 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

Radeon HD 6770		1520 points
GeForce GTS 450		1453 points
	Difference: 67 (5%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
Radeon HD 6770		108 Watts
	Difference: 2 Watts (2%)

Memory Bandwidth

Performance-wise, the Radeon HD 6770 should theoretically be a bit better than the GeForce GTS 450 overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 9472 (16%)

Texel Rate

The Radeon HD 6770 should be quite a bit (approximately 44%) better at AF than the GeForce GTS 450. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 10944 (44%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6770 is superior to the GeForce GTS 450, but it probably won't make a huge difference. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 1872 (15%)

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 maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.