Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTX 660 Ti vs Radeon HD 4850 X2 512MB

Intro

The GeForce GTX 660 Ti has a GPU clock speed of 915 MHz, and the 2048 MB of GDDR5 RAM runs at 1500 MHz through a 192-bit bus. It also is comprised of 1344 Stream Processors, 112 TAUs, and 24 ROPs.

Compare all of that to the Radeon HD 4850 X2 512MB, which features core clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should be 13% faster than the Radeon HD 4850 X2 512MB overall, because of its higher data rate. (explain)

GeForce GTX 660 Ti 144000 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 16896 (13%)

Texel Rate

The GeForce GTX 660 Ti will be quite a bit (more or less 105%) more effective at anisotropic filtering than the Radeon HD 4850 X2 512MB. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Difference: 52480 (105%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 660 Ti is a better choice, but only just. (explain)

GeForce GTX 660 Ti 21960 Mpixels/sec
Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Difference: 1960 (10%)

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

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Check prices at:

Radeon HD 4850 X2 512MB

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

Display Specifications

Hide Specifications

Model GeForce GTX 660 Ti Radeon HD 4850 X2 512MB
Manufacturer nVidia AMD
Year August 2012 Nov 7, 2008
Code Name GK104 R700
Memory 2048 MB 512 MB (x2)
Core Speed 915 MHz 625 MHz (x2)
Memory Speed 6000 MHz 1986 MHz (x2)
Power (Max TDP) 150 watts 250 watts
Bandwidth 144000 MB/sec 127104 MB/sec
Texel Rate 102480 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 1344 800(160x5) (x2)
Texture Mapping Units 112 40 (x2)
Render Output Units 24 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 192-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors 3540 million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR 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 in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - 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 4850 X2 512MB

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

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti-Spam by WP-SpamShield