GeForce 8300 GS (OEM) vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which features a GPU core clock speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also features 800 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
Radeon HD 6790		150 Watts
	Difference: 110 Watts (275%)

Memory Bandwidth

Performance-wise, the Radeon HD 6790 should in theory be quite a bit better than the GeForce 8300 GS (OEM) in general. (explain)

Radeon HD 6790		134400 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 128000 (2000%)

Texel Rate

The Radeon HD 6790 should be quite a bit (approximately 1767%) more effective at anisotropic filtering than the GeForce 8300 GS (OEM). (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 31800 (1767%)

Pixel Rate

The Radeon HD 6790 is a lot (about 1393%) better at AA than the GeForce 8300 GS (OEM), and also able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 6790		13440 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 12540 (1393%)

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 (measured in MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.