Compare any two graphics cards:
VS

GeForce GTX 295 vs Radeon HD 4850 X2 512MB

Intro

The GeForce GTX 295 has core clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs along with 80 Texture Address Units and 28 ROPs.

Compare that to the Radeon HD 4850 X2 512MB, which features a clock speed of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also features a 256-bit bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 X2 512MB 250 Watts
GeForce GTX 295 289 Watts
Difference: 39 Watts (16%)

Memory Bandwidth

The GeForce GTX 295 should theoretically be quite a bit faster than the Radeon HD 4850 X2 512MB in general. (explain)

GeForce GTX 295 223776 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 96672 (76%)

Texel Rate

The GeForce GTX 295 should be a lot (approximately 84%) more effective at AF than the Radeon HD 4850 X2 512MB. (explain)

GeForce GTX 295 92160 Mtexels/sec
Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Difference: 42160 (84%)

Pixel Rate

The GeForce GTX 295 should be a lot (approximately 61%) better at full screen anti-aliasing than the Radeon HD 4850 X2 512MB, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 295 32256 Mpixels/sec
Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Difference: 12256 (61%)

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 295

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 295 Radeon HD 4850 X2 512MB
Manufacturer nVidia AMD
Year January 8, 2009 Nov 7, 2008
Code Name G200b R700
Memory 896 MB (x2) 512 MB (x2)
Core Speed 576 MHz (x2) 625 MHz (x2)
Memory Speed 1998 MHz (x2) 1986 MHz (x2)
Power (Max TDP) 289 watts 250 watts
Bandwidth 223776 MB/sec 127104 MB/sec
Texel Rate 92160 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 240 (x2) 800(160x5) (x2)
Texture Mapping Units 80 (x2) 40 (x2)
Render Output Units 28 (x2) 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 448-bit (x2) 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 information (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Display Prices

Hide Prices

GeForce GTX 295

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