MetkuMods



HD4850 Roundup

Four cards that break the mold
Gainward  Gigabyte
Sapphire   Palit  
Author: Toni Siik
Published: 17.11.2008
Product Group: GFX cards
In English In English
Suomeksi Suomeksi

Gigabyte GV-R485OC-1GH

Package

Unlike the other cards in this roundup, the Gigabyte card was delivered without the retail box and bundle. This means we don't know what the bundle includes.

Specifications

  • I/O Output: Dual DL-DVI-I+HDTV
  • ICore Clock: 700 MHz
  • IMemory Clock: 990 MHz, 1980 Mbps
  • IPCI Express 2.0 x16 bus interface
  • I1GB /256bit GDDR3 memory interface
  • IDual Slot Active Cooler
  • IHDMI compliant via dongle
  • I7.1 Audio Channel Support
  • IMicrosoft® DirectX® 10.1 support
  • IShader Model 4.1 support
 

Ati HD4850 Roundup (Gainward, Sapphire, Gigabyte and Palit)
 

Ati HD4850 Roundup (Gainward, Sapphire, Gigabyte and Palit)
 

Just like Sapphire, Gigabyte uses a non-reference PCB on their HD4850-card. The PCB actually looks a bit like Sapphires, but the GPU is located slightly differently on the PCB. Being the only 1 GB card in this roundup, it's going to be interesting to see if this extra memory has any effect on the performance. The GPU is clocked at 700 MHz which surpasses the reference clocks by a large margin. The memory on other hand is clocked at 1980 MHz which is a few MHz lower than what we see in the reference cards.

 

Ati HD4850 Roundup (Gainward, Sapphire, Gigabyte and Palit)
 

Zalman seems to be a favorite among the manufacturers as, this time the Zalman VF-800 cooler is used. The memory chips and power circuitry have no heatsinks to help dissipate the heat.

Overclocking

Even if this card had the highest clocked on the core to begin with, it overclocked nicely to 750 MHz and the memories to 1140 MHz. The achieved memory clocks were a nice surprise as they don't have any additional cooling.




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