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Radeon HD 6670 (OEM) vs Radeon HD 7750

Intro

The Radeon HD 6670 (OEM) comes with a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 ROPs.

Compare those specifications to the Radeon HD 7750, which comes with GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 512 Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

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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 HD 7750 2240 points
Radeon HD 6670 (OEM) 1120 points
Difference: 1120 (100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon HD 6670 (OEM) 63 Watts
Difference: 8 Watts (15%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should theoretically be a bit superior to the Radeon HD 6670 (OEM) in general. (explain)

Radeon HD 7750 72000 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon HD 7750 will be much (more or less 33%) faster with regards to AF than the Radeon HD 6670 (OEM). (explain)

Radeon HD 7750 25600 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 6400 (33%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7750 is the winner, by far. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 6400 (100%)

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)

Amazon.com

Check prices at:

Radeon HD 7750

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) Radeon HD 7750
Manufacturer AMD AMD
Year February 2011 February 2012
Code Name Turks Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 800 MHz 800 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 63 watts 55 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 19200 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 480 512
Texture Mapping Units 24 32
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 715 million 1500 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the 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 most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 6670 (OEM)

Amazon.com

Check prices at:

Radeon HD 7750

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.

Comments

One Response to “Radeon HD 6670 (OEM) vs Radeon HD 7750”
PS3: Next playstation codename orbis slated for holiday 2013 - The Older Gamers Forums says:

[...] the new Xbox's 6670, just by how much we don't know yet. 6670 vs 7750 (low end southern island) Radeon HD 6670 (OEM) vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare 6670 vs 7970 (high end southern island) Radeon HD 6670 (OEM) vs Radeon HD 7970 – Performance [...]

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