Join Us On Facebook

Compare any two graphics cards:
VS

GeForce GTS 450 1GB vs Radeon HD 4770

Intro

The GeForce GTS 450 1GB features a GPU clock speed of 783 MHz, and the 1024 MB of GDDR5 RAM runs at 902 MHz through a 128-bit bus. It also is made up of 192 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 4770, which has a clock speed of 750 MHz and a GDDR5 memory speed of 800 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It features 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770 80 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 26 Watts (33%)

Memory Bandwidth

In theory, the GeForce GTS 450 1GB should be a small bit faster than the Radeon HD 4770 in general. (explain)

GeForce GTS 450 1GB 57728 MB/sec
Radeon HD 4770 51200 MB/sec
Difference: 6528 (13%)

Texel Rate

The GeForce GTS 450 1GB will be a little bit (about 4%) faster with regards to anisotropic filtering than the Radeon HD 4770. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
Radeon HD 4770 24000 Mtexels/sec
Difference: 1056 (4%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTS 450 1GB is the winner, but not by far. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
Radeon HD 4770 12000 Mpixels/sec
Difference: 528 (4%)

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

GeForce GTS 450 1GB

Amazon.com

Radeon HD 4770

Amazon.com

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

Model GeForce GTS 450 1GB Radeon HD 4770
Manufacturer nVidia AMD
Year September 2010 Apr 28, 2009
Code Name GF106 RV740
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.0 x16
Memory 1024 MB 512 MB
Core Speed 783 MHz 750 MHz
Shader Speed 1566 MHz (N/A) MHz
Memory Speed 902 MHz (3608 MHz effective) 800 MHz (3200 MHz effective)
Unified Shaders 192 640(128x5)
Texture Mapping Units 32 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0
Power (Max TDP) 106 watts 80 watts
Shader Model 5.0 4.1
Bandwidth 57728 MB/sec 51200 MB/sec
Texel Rate 25056 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 12000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock 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 in one 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 clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Comments

Be the first to leave a comment!

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Spam Protection by WP-SpamFree