GeForce 8300 GS (OEM) vs Radeon R9 M390X

Intro

Compare that to the Radeon R9 M390X, which makes use of a 28 nm design. AMD has clocked the core frequency at 723 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
Radeon R9 M390X		125 Watts
	Difference: 85 Watts (213%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M390X will be 2400% faster than the GeForce 8300 GS (OEM) in general, because of its greater bandwidth. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 153600 (2400%)

Texel Rate

The Radeon R9 M390X is quite a bit (approximately 5041%) better at anisotropic filtering than the GeForce 8300 GS (OEM). (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 90744 (5041%)

Pixel Rate

The Radeon R9 M390X will be quite a bit (approximately 2471%) better at FSAA than the GeForce 8300 GS (OEM), and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 22236 (2471%)

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 max amount of data (measured in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 in one second. This is worked out 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 video card will be at 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 could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.