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GeForce GTS 250 1GB vs Radeon HD 5770

Intro

The GeForce GTS 250 1GB features a clock frequency of 738 MHz and a GDDR3 memory speed of 1100 MHz. It also makes use of a 256-bit memory bus, and makes use of a 65/55 nm design. It features 128 SPUs, 64 TAUs, and 16 ROPs.

Compare that to the Radeon HD 5770, which makes use of a 40 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this specific model. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770 108 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 37 Watts (34%)

Memory Bandwidth

Theoretically, the Radeon HD 5770 should be a bit faster than the GeForce GTS 250 1GB in general. (explain)

Radeon HD 5770 76800 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 6400 (9%)

Texel Rate

The GeForce GTS 250 1GB is quite a bit (more or less 39%) more effective at anisotropic filtering than the Radeon HD 5770. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
Radeon HD 5770 34000 Mtexels/sec
Difference: 13232 (39%)

Pixel Rate

The Radeon HD 5770 is a little bit (about 15%) better at full screen anti-aliasing than the GeForce GTS 250 1GB, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 5770 13600 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 1792 (15%)

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 GTS 250 1GB

Amazon.com

Check prices at:

Radeon HD 5770

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 GTS 250 1GB Radeon HD 5770
Manufacturer nVidia AMD
Year March 3, 2009 October 13, 2009
Code Name G92a/b Juniper XT
Memory 1024 MB 1024 MB
Core Speed 738 MHz 850 MHz
Memory Speed 2200 MHz 4800 MHz
Power (Max TDP) 145 watts 108 watts
Bandwidth 70400 MB/sec 76800 MB/sec
Texel Rate 47232 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 128 800(160x5)
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 1040 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels 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 number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 250 1GB

Amazon.com

Check prices at:

Radeon HD 5770

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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