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Radeon HD 6670 (OEM) 1GB vs Radeon R7 250

Intro

The Radeon HD 6670 (OEM) 1GB uses a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this card. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

Compare all of that to the Radeon R7 250, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a speed of 1150 MHz on this specific card. It features 384 SPUs as well as 24 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB 63 Watts
Radeon R7 250 65 Watts
Difference: 2 Watts (3%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 should be a little bit faster than the Radeon HD 6670 (OEM) 1GB overall. (explain)

Radeon R7 250 73600 MB/sec
Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Difference: 9600 (15%)

Texel Rate

The Radeon R7 250 will be quite a bit (about 25%) better at AF than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon R7 250 24000 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 4800 (25%)

Pixel Rate

The Radeon R7 250 will be quite a bit (approximately 25%) more effective at AA than the Radeon HD 6670 (OEM) 1GB, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R7 250 8000 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 1600 (25%)

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

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Radeon HD 6670 (OEM) 1GB

Amazon.com

Check prices at:

Radeon R7 250

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 6670 (OEM) 1GB Radeon R7 250
Manufacturer AMD AMD
Year February 2011 October 2013
Code Name Turks Oland XT
Memory 1024 MB 1024 MB
Core Speed 800 MHz 1000 MHz
Memory Speed 4000 MHz 4600 MHz
Power (Max TDP) 63 watts 65 watts
Bandwidth 64000 MB/sec 73600 MB/sec
Texel Rate 19200 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 480 384
Texture Mapping Units 24 24
Render Output Units 8 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 715 million 1040 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6670 (OEM) 1GB

Amazon.com

Check prices at:

Radeon R7 250

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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