GeForce GTX 470 vs Radeon HD 7770

Intro

Compare all that to the Radeon HD 7770, which comes with a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 Raster Operation 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

Radeon HD 7770		3180 points
GeForce GTX 470		2937 points
	Difference: 243 (8%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 470		215 Watts
	Difference: 135 Watts (169%)

Memory Bandwidth

The GeForce GTX 470, in theory, should perform much faster than the Radeon HD 7770 overall. (explain)

GeForce GTX 470		133920 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 61920 (86%)

Texel Rate

The Radeon HD 7770 is a small bit (more or less 18%) faster with regards to AF than the GeForce GTX 470. (explain)

Radeon HD 7770		40000 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 6008 (18%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 470 is superior to the Radeon HD 7770, and very much so. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 8280 (52%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once 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 anti-aliasing, HDR and higher screen resolutions.

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

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