Radeon HD 6450 (OEM) vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which comes with a GPU core clock speed of 1050 MHz, and 8192 MB of GDDR5 memory set to run at 1500 MHz through a 512-bit bus. It also features 2816 SPUs, 176 Texture Address Units, and 64 ROPs.

Display Graphs

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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 R9 390X 8G		13555 points
Radeon HD 6450 (OEM)		340 points
	Difference: 13215 (3887%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 244 Watts (787%)

Memory Bandwidth

In theory, the Radeon R9 390X 8G will be 2900% quicker than the Radeon HD 6450 (OEM) in general, because of its greater bandwidth. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 371200 (2900%)

Texel Rate

The Radeon R9 390X 8G should be much (about 3596%) faster with regards to anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 179800 (3596%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, by far. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 64700 (2588%)

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 information (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.