Radeon HD 6670 (OEM) vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which has core speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 Texture Address Units and 64 Rasterization Operator Units.

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 6670 (OEM)		1120 points
	Difference: 12435 (1110%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 212 Watts (337%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G should be 500% faster than the Radeon HD 6670 (OEM) in general, due to its greater bandwidth. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 320000 (500%)

Texel Rate

The Radeon R9 390X 8G is quite a bit (approximately 863%) better at AF than the Radeon HD 6670 (OEM). (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 165600 (863%)

Pixel Rate

The Radeon R9 390X 8G should be quite a bit (about 950%) faster with regards to full screen anti-aliasing than the Radeon HD 6670 (OEM), and also should be able to handle higher resolutions more effectively. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 60800 (950%)

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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.