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Geforce GTX 670 vs Radeon HD 7850

Intro

The Geforce GTX 670 comes with a GPU core clock speed of 915 MHz, and the 2048 MB of GDDR5 memory is set to run at 1500 MHz through a 256-bit bus. It also features 1344 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 7850, which comes with GPU core speed of 860 MHz, and 2048 MB of GDDR5 memory set to run at 1200 MHz through a 256-bit bus. It also features 1024 Stream Processors, 64 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Geforce GTX 670 170 Watts
Difference: 40 Watts (31%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should be 25% quicker than the Radeon HD 7850 in general, due to its higher data rate. (explain)

Geforce GTX 670 192000 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 38400 (25%)

Texel Rate

The Geforce GTX 670 is a lot (approximately 86%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 47440 (86%)

Pixel Rate

The Geforce GTX 670 will be a little bit (approximately 6%) better at full screen anti-aliasing than the Radeon HD 7850, and also should be able to handle higher resolutions while still performing well. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 1760 (6%)

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 670

Amazon.com

Radeon HD 7850

Amazon.com

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 670 Radeon HD 7850
Manufacturer nVidia AMD
Year May 2012 March 2012
Code Name GK104 Pitcairn Pro
Memory 2048 MB 2048 MB
Core Speed 915 MHz 860 MHz
Memory Speed 6000 MHz 4800 MHz
Power (Max TDP) 170 watts 130 watts
Bandwidth 192000 MB/sec 153600 MB/sec
Texel Rate 102480 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 1344 1024
Texture Mapping Units 112 64
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.2 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Comments

2 Responses to “Geforce GTX 670 vs Radeon HD 7850”
Graphic Crad Expert says:

I have recently bought GTX 670...due to HD 7850 wasn't enough powerfull to max out my brand new Crysis 3 game!
I was Between GTX 670 and HD 7970 but considering that GTX 670 is using much lower power consumption and have more overclock stabillity than HD 7970 was the reason that i bought GTX 670!!!

Both cards are great if you play sport/rpg/simulator/strategy games then go for AMD if you play games like Battlefield 3 or Crysis 3 or Batman Arkham city then nVidia all the way!
Moreover nVidia drivers are much better than ATi's is!

Kostas says:

So I bought the HD 7850 and I overclocked it to 1050 mhz Core Clock and 1450 mhz Memory Clock WITHOUT any changes to power! This GPU is simply a beast if you OC it. Its even better than an R9 270X now. I deffinately recommend you to buy it. It is really cheap and it can run Fallout 4 on max setting easily!

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