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GeForce GTX 560 Ti 448 vs Radeon HD 4870 X2

Intro

The GeForce GTX 560 Ti 448 features core clock speeds of 732 MHz on the GPU, and 900 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs along with 56 Texture Address Units and 40 ROPs.

Compare those specifications to the Radeon HD 4870 X2, which features GPU clock speed of 750 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448 210 Watts
Radeon HD 4870 X2 350 Watts
Difference: 140 Watts (67%)

Memory Bandwidth

The Radeon HD 4870 X2 should in theory perform a lot faster than the GeForce GTX 560 Ti 448 in general. (explain)

Radeon HD 4870 X2 230400 MB/sec
GeForce GTX 560 Ti 448 144000 MB/sec
Difference: 86400 (60%)

Texel Rate

The Radeon HD 4870 X2 will be much (approximately 46%) more effective at AF than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
GeForce GTX 560 Ti 448 40992 Mtexels/sec
Difference: 19008 (46%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 560 Ti 448 is superior to the Radeon HD 4870 X2, by a large margin. (explain)

GeForce GTX 560 Ti 448 29280 Mpixels/sec
Radeon HD 4870 X2 24000 Mpixels/sec
Difference: 5280 (22%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 560 Ti 448

Amazon.com

Check prices at:

Radeon HD 4870 X2

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 560 Ti 448 Radeon HD 4870 X2
Manufacturer nVidia AMD
Year December 2011 Aug 12, 2008
Code Name GF110 R700
Memory 1280 MB 1024 MB (x2)
Core Speed 732 MHz 750 MHz (x2)
Memory Speed 3600 MHz 3600 MHz (x2)
Power (Max TDP) 210 watts 350 watts
Bandwidth 144000 MB/sec 230400 MB/sec
Texel Rate 40992 Mtexels/sec 60000 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 448 800(160x5) (x2)
Texture Mapping Units 56 40 (x2)
Render Output Units 40 16 (x2)
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 3000 million 956 million
Bus PCIe 2.0 x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably 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 560 Ti 448

Amazon.com

Check prices at:

Radeon HD 4870 X2

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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