Compare any two graphics cards:
VS

GeForce GT 320 vs Radeon HD 4650 1GB

Intro

The GeForce GT 320 comes with a GPU clock speed of 540 MHz, and the 1024 MB of GDDR3 RAM is set to run at 790 MHz through a 128-bit bus. It also is comprised of 72 SPUs, 24 Texture Address Units, and 8 ROPs.

Compare those specifications to the Radeon HD 4650 1GB, which has a clock frequency of 600 MHz and a GDDR3 memory speed of 700 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
Radeon HD 4650 1GB 55 Watts
Difference: 12 Watts (28%)

Memory Bandwidth

In theory, the GeForce GT 320 should be 13% faster than the Radeon HD 4650 1GB overall, because of its higher data rate. (explain)

GeForce GT 320 25280 MB/sec
Radeon HD 4650 1GB 22400 MB/sec
Difference: 2880 (13%)

Texel Rate

The Radeon HD 4650 1GB is quite a bit (approximately 48%) more effective at texture filtering than the GeForce GT 320. (explain)

Radeon HD 4650 1GB 19200 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 6240 (48%)

Pixel Rate

The Radeon HD 4650 1GB will be a little bit (approximately 11%) more effective at FSAA than the GeForce GT 320, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 4650 1GB 4800 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 480 (11%)

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 GT 320

Amazon.com

Check prices at:

Radeon HD 4650 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 GT 320 Radeon HD 4650 1GB
Manufacturer nVidia AMD
Year February 2010 Sep 10, 2008
Code Name GT215 RV730 PRO
Memory 1024 MB 1024 MB
Core Speed 540 MHz 600 MHz
Memory Speed 1580 MHz 1400 MHz
Power (Max TDP) 43 watts 55 watts
Bandwidth 25280 MB/sec 22400 MB/sec
Texel Rate 12960 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 72 320(64x5)
Texture Mapping Units 24 32
Render Output Units 8 8
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 727 million 514 million
Bus PCIe x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many 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 GT 320

Amazon.com

Check prices at:

Radeon HD 4650 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