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GeForce GTX 660 Ti vs Radeon HD 5870

Intro

The GeForce GTX 660 Ti has a GPU clock speed of 915 MHz, and the 2048 MB of GDDR5 RAM is set to run at 1500 MHz through a 192-bit bus. It also features 1344 Stream Processors, 112 Texture Address Units, and 24 Raster Operation Units.

Compare that to the Radeon HD 5870, which features a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It features 1600(320x5) SPUs, 80 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
Radeon HD 5870 188 Watts
Difference: 38 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be 7% quicker than the GeForce GTX 660 Ti in general, due to its higher bandwidth. (explain)

Radeon HD 5870 153600 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 9600 (7%)

Texel Rate

The GeForce GTX 660 Ti is a lot (approximately 51%) faster with regards to AF than the Radeon HD 5870. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 34480 (51%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5870 is the winner, by a large margin. (explain)

Radeon HD 5870 27200 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 5240 (24%)

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 660 Ti

Amazon.com

Check prices at:

Radeon HD 5870

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 660 Ti Radeon HD 5870
Manufacturer nVidia AMD
Year August 2012 September 23, 2009
Code Name GK104 Cypress XT
Memory 2048 MB 1024 MB
Core Speed 915 MHz 850 MHz
Memory Speed 6000 MHz 4800 MHz
Power (Max TDP) 150 watts 188 watts
Bandwidth 144000 MB/sec 153600 MB/sec
Texel Rate 102480 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 1344 1600(320x5)
Texture Mapping Units 112 80
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 3540 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core 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 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 maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Check prices at:

Radeon HD 5870

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

3 Responses to “GeForce GTX 660 Ti vs Radeon HD 5870”
nyiko says:

rodeon wins,,,its a monster and the graphics are good

larsV12 says:

@nyiko .. it does, and like so many of ATi cards of recent years, they're still able to compete against - and often better - the far newer tech' from NVIDIA of a the same / similar price bracket.

pikkart says:

Just swapped my Sapphire 5870 for an Asus GTX 660 Ti to play Ark. Huge difference in terms of framerate.

5870: ran at 1280x1024 with everything on low to get 15-20 fps.

660 Ti: running 1600x1200, with most settings at medium or high, and I get a comfy 30+ fps.

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