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GeForce GTX 880M vs Radeon HD 6670 (OEM) 1GB

Intro

The GeForce GTX 880M makes use of a 28 nm design. nVidia has set the core speed at 954 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this specific card. It features 1536 SPUs along with 128 Texture Address Units and 32 ROPs.

Compare that to the Radeon HD 6670 (OEM) 1GB, which has GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also features 480 Stream Processors, 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
GeForce GTX 880M 130 Watts
Difference: 67 Watts (106%)

Memory Bandwidth

Performance-wise, the GeForce GTX 880M should in theory be much better than the Radeon HD 6670 (OEM) 1GB overall. (explain)

GeForce GTX 880M 128000 MB/sec
Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Difference: 64000 (100%)

Texel Rate

The GeForce GTX 880M should be quite a bit (approximately 536%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 102912 (536%)

Pixel Rate

The GeForce GTX 880M will be a lot (more or less 377%) more effective at AA than the Radeon HD 6670 (OEM) 1GB, and capable of handling higher resolutions more effectively. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 24128 (377%)

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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GeForce GTX 880M

Amazon.com

Check prices at:

Radeon HD 6670 (OEM) 1GB

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 GeForce GTX 880M Radeon HD 6670 (OEM) 1GB
Manufacturer nVidia AMD
Year March 12 2014 February 2011
Code Name GK104 Turks
Memory 4096 MB 1024 MB
Core Speed 954 MHz 800 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 130 watts 63 watts
Bandwidth 128000 MB/sec 64000 MB/sec
Texel Rate 122112 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 1536 480
Texture Mapping Units 128 24
Render Output Units 32 8
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 715 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once 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 number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 processed per second.

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

Display Prices

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GeForce GTX 880M

Amazon.com

Check prices at:

Radeon HD 6670 (OEM) 1GB

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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