Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTX 275 vs Radeon HD 4850 X2 1GB

Intro

The GeForce GTX 275 features a GPU clock speed of 633 MHz, and the 896 MB of GDDR3 RAM is set to run at 1134 MHz through a 448-bit bus. It also is made up of 240 Stream Processors, 80 Texture Address Units, and 28 Raster Operation Units.

Compare that to the Radeon HD 4850 X2 1GB, which features a core clock frequency of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275 219 Watts
Radeon HD 4850 X2 1GB 250 Watts
Difference: 31 Watts (14%)

Memory Bandwidth

The Radeon HD 4850 X2 1GB, in theory, should be a small bit faster than the GeForce GTX 275 overall. (explain)

Radeon HD 4850 X2 1GB 127104 MB/sec
GeForce GTX 275 127008 MB/sec
Difference: 96 (0%)

Texel Rate

The GeForce GTX 275 should be a little bit (about 1%) faster with regards to AF than the Radeon HD 4850 X2 1GB. (explain)

GeForce GTX 275 50640 Mtexels/sec
Radeon HD 4850 X2 1GB 50000 Mtexels/sec
Difference: 640 (1%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 4850 X2 1GB is superior to the GeForce GTX 275, but not by far. (explain)

Radeon HD 4850 X2 1GB 20000 Mpixels/sec
GeForce GTX 275 17724 Mpixels/sec
Difference: 2276 (13%)

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 275

Amazon.com

Check prices at:

Radeon HD 4850 X2 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

Display Specifications

Hide Specifications

Model GeForce GTX 275 Radeon HD 4850 X2 1GB
Manufacturer nVidia AMD
Year April 9, 2009 Nov 7, 2008
Code Name G200b R700
Memory 896 MB 1024 MB (x2)
Core Speed 633 MHz 625 MHz (x2)
Memory Speed 2268 MHz 1986 MHz (x2)
Power (Max TDP) 219 watts 250 watts
Bandwidth 127008 MB/sec 127104 MB/sec
Texel Rate 50640 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 240 800(160x5) (x2)
Texture Mapping Units 80 40 (x2)
Render Output Units 28 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 448-bit 256-bit (x2)
Fab Process 55 nm 55 nm
Transistors 1400 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest 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 the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 can be processed per second. This number is calculated by multiplying the total number of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 275

Amazon.com

Check prices at:

Radeon HD 4850 X2 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.

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