Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTS 250 512MB vs Radeon HD 7770

Intro

The GeForce GTS 250 512MB uses a 65/55 nm design. nVidia has set the core frequency at 738 MHz. The GDDR3 RAM is set to run at a frequency of 1100 MHz on this model. It features 128 SPUs as well as 64 Texture Address Units and 16 ROPs.

Compare that to the Radeon HD 7770, which features core speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
GeForce GTS 250 512MB 145 Watts
Difference: 65 Watts (81%)

Memory Bandwidth

Theoretically, the Radeon HD 7770 should be a little bit faster than the GeForce GTS 250 512MB overall. (explain)

Radeon HD 7770 72000 MB/sec
GeForce GTS 250 512MB 70400 MB/sec
Difference: 1600 (2%)

Texel Rate

The GeForce GTS 250 512MB is a bit (about 18%) better at anisotropic filtering than the Radeon HD 7770. (explain)

GeForce GTS 250 512MB 47232 Mtexels/sec
Radeon HD 7770 40000 Mtexels/sec
Difference: 7232 (18%)

Pixel Rate

The Radeon HD 7770 should be a lot (approximately 36%) faster with regards to full screen anti-aliasing than the GeForce GTS 250 512MB, and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 7770 16000 Mpixels/sec
GeForce GTS 250 512MB 11808 Mpixels/sec
Difference: 4192 (36%)

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

Display Prices

Hide Prices

GeForce GTS 250 512MB

Amazon.com

Check prices at:

Radeon HD 7770

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 GTS 250 512MB Radeon HD 7770
Manufacturer nVidia AMD
Year March 3, 2009 February 2012
Code Name G92a/b Cape Verde XT
Memory 512 MB 1024 MB
Core Speed 738 MHz 1000 MHz
Memory Speed 2200 MHz 4500 MHz
Power (Max TDP) 145 watts 80 watts
Bandwidth 70400 MB/sec 72000 MB/sec
Texel Rate 47232 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 128 640
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 28 nm
Transistors 754 million 1500 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 Raster Operations Pipelines 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 is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 250 512MB

Amazon.com

Check prices at:

Radeon HD 7770

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