GeForce 8300 GS (OEM) vs Radeon HD 7770

Intro

Compare those specifications to the Radeon HD 7770, which features 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 is comprised of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
Radeon HD 7770		80 Watts
	Difference: 40 Watts (100%)

Memory Bandwidth

In theory, the Radeon HD 7770 should be quite a bit faster than the GeForce 8300 GS (OEM) in general. (explain)

Radeon HD 7770		72000 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 65600 (1025%)

Texel Rate

The Radeon HD 7770 should be much (approximately 2122%) more effective at texture filtering than the GeForce 8300 GS (OEM). (explain)

Radeon HD 7770		40000 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 38200 (2122%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7770 is superior to the GeForce 8300 GS (OEM), by a large margin. (explain)

Radeon HD 7770		16000 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 15100 (1678%)

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 data (measured in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.