Compare any two graphics cards:
VS

GeForce 9400 GT 256MB vs Radeon HD 4650 1GB

Intro

The GeForce 9400 GT 256MB has a GPU core clock speed of 550 MHz, and the 256 MB of GDDR2 RAM runs at 400 MHz through a 128-bit bus. It also is comprised of 16 Stream Processors, 8 TAUs, and 4 ROPs.

Compare all of that to the Radeon HD 4650 1GB, which has core clock speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB 50 Watts
Radeon HD 4650 1GB 55 Watts
Difference: 5 Watts (10%)

Memory Bandwidth

The Radeon HD 4650 1GB, in theory, should be much faster than the GeForce 9400 GT 256MB in general. (explain)

Radeon HD 4650 1GB 22400 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 9600 (75%)

Texel Rate

The Radeon HD 4650 1GB is a lot (more or less 336%) more effective at texture filtering than the GeForce 9400 GT 256MB. (explain)

Radeon HD 4650 1GB 19200 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 14800 (336%)

Pixel Rate

The Radeon HD 4650 1GB should be quite a bit (about 118%) better at AA than the GeForce 9400 GT 256MB, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 4650 1GB 4800 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 2600 (118%)

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 9400 GT 256MB

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 9400 GT 256MB Radeon HD 4650 1GB
Manufacturer nVidia AMD
Year August 2008 Sep 10, 2008
Code Name G96a RV730 PRO
Memory 256 MB 1024 MB
Core Speed 550 MHz 600 MHz
Memory Speed 800 MHz 1400 MHz
Power (Max TDP) 50 watts 55 watts
Bandwidth 12800 MB/sec 22400 MB/sec
Texel Rate 4400 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 2200 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 16 320(64x5)
Texture Mapping Units 8 32
Render Output Units 4 8
Bus Type GDDR2 GDDR3
Bus Width 128-bit 128-bit
Fab Process 65 nm 55 nm
Transistors 314 million 514 million
Bus PCIe x16 2.0, PCI PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9400 GT 256MB

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