HD4850 working at x4 link width instead of x16 Tags: Graphics Cards Graphics Last response: June 7, 2011 2:54 PM in Graphics & Displays Share hellzERk June 7, 2011 8:23:35 AM Well, as the topic says.. my graphic card is been running at x4 link width even tho I'm pretty sure it should work at x16... I've been looking for an answer everywhere but every thread about this problem has been solved and none of those solutions worked for me... some of those were: -set the power options to high performance. didnt work -Make sure it is in the dedicated upper PCIE 2.0 x16 slot. And it is. -Make sure the other PCIE 2.0 x16 slot isn't being use. And it isn't. -Uninstalled everything from ATI/AMD from my computer and reinstall the latest drivers. - Flashed my BIOS to the latest version available. Then I decided to get a second opinion, ( I knew it was running at x4 because of CCC ) and both CPU-Z and GPU-Z told me the same.. that I was running my GPU at x4 when the max available was x16. I just don't know what else to do, I also went into my BIOS and look for anything that would let me set or force the link width, but there was nothing. my specs are: Windows 7 64bit Ultimate GA-MA78G-DS3H rev 2.1 Phenom 9550 2.2GHz @ 2.6GHz 2x2GB OCZ Platinium DDR2 1066mhz Gigabyte HD4850 512mb I'll glady accept any comments or suggestions on what do to (PLEASE HELP ME) Thanks in advance. More about : hd4850 working link width x16 Maziar a c 168 U Graphics card June 7, 2011 9:13:02 AM Try updating your BIOS.If it didn't help,then probably your motherboard is defective. Can you test the card in another system ? hellzERk June 7, 2011 9:49:47 AM Yes I will as soon as I get a chance. Can't find your answer ? Ask ! Get the answer devroz June 7, 2011 2:54:13 PM Check the manual of your motherboard and also download the online instructions. My motherboard needs single card gpus to be connected to the bottom slot and a placeholder to be put into the top slot for 16x. Can't find your answer ? Ask ! Publish Related resources: Forum8800GT PCIe link width stuck at x1 instead of x16 Forum8600 GTS runs at PCIE link mode x2 instead of x16 ForumPCI express x8 instead of x16 ForumGigabyte x48t-dq6 / ATI 4870 graphics link width problem ForumPCI-E Link Width Degrading ForumPCI-e Link Width ForumLink Width issue ForumHD7950 @ PCI-E x1 1.1 instead of x16 2.0, please help ForumGTX 670 running at x8 instead of x16 ForumPcie x1, x4 , x8, x16 ... ForumMotherboard for 3 dual- width PCIe 3.0 GPUs, and single Core i7 3930K ForumX4 , x8, x16 PCI Express Cards (not Video Cards) Forum8800GTS 512 Link Width x2 -- I'm goin crazy! ForumRadeon HD 6450 possibly run well in PCIe X16 x4 lane/electrical... ForumThree workstation video cards on a X16 , x8, x4 board? ForumEVGA FTW or Gigabyte GTX 670? ForumComputer freezing then graphics card stops working ForumAre all cards compatible with PCI express 2.1x16 are also compatible with PCI ForumBest sub-$100 card to pair with HD4850? ForumNvidea geforce 8400 video graphics card not working More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !