GeForce 8300 GS (OEM) vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which comes with GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 32 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 R9 M390X		125 Watts
	Difference: 85 Watts (213%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M390X should in theory be a lot better than the GeForce 8300 GS (OEM) overall. (explain)

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

Texel Rate

The Radeon R9 M390X is much (about 5041%) more effective at texture 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 is a lot (more or less 2471%) more effective at AA than the GeForce 8300 GS (OEM), and able to handle higher screen resolutions better. (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 maximum amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.