Can 8X AGP card work in 4X AGP motherboard? Tags: Graphics Cards Visiontek Motherboards Graphics Last response: January 18, 2007 9:56 PM in Graphics & Displays Share birdflu January 18, 2007 6:29:44 PM I mistakenly bought a new 8X AGP (Visiontek ATI X1950), installed in it and realized that my motherboard only accepts up to 4X. I can't take it back because the product is opened. Are 8X cards backwards compatible with 4X motherboards? Thanks! Matt More about : agp card work agp motherboard Slava January 18, 2007 6:32:00 PM Yes, unless it is a very old 4X motherboard using incorrect voltage. birdflu January 18, 2007 6:51:00 PM The system is 2 years old, so the motherboard is hopefully not the improper voltage. It is most likely a power issue to the card - I will go get a larger power supply to see that remidies the problem. Matt Related resources Will a 4x AGP card work in an 8x slot? - Forum Can I use an 8x agp card in a 4x agp motherboard ? - Forum 8X AGP in older 4X AGP slot - will it work ? - Forum Will I destroy anything if using AGP 4x card in agp 8x slot? - Forum AGP 4x slot for 8x Card ? - Forum Can't find your answer ? Ask ! Get the answer blade85 January 18, 2007 6:52:59 PM what mobo is it??? It should work fine. Also if your gonna get a new psu, I would suggest you get atleast 400W with around 30amps on the +12V rail. Slava January 18, 2007 6:55:26 PM I did not realize you had an "issue". You mean the card is in but it is not working? What are the symptoms? And yes, a 2-year old motherboard should have a 1.5V AGP. That's fine. If you have a Dell or some such, your PSU is 300W. Get a 500-550W PSU then. You may still continue to have problems though. There is a suspicion that the current batch of X1950 PRO AGPs is using faulty digital voltage regulators which cause crashes and lockups. harty23690 January 18, 2007 7:15:17 PM I have an 8x card in my 4 year old mobo. (that only accepts 4x) you shouldnt have an issue. most likely a dodgy card. srgess January 18, 2007 9:56:37 PM My card ( x1600 agp x8 ) doesnt work on my other pc that support only 4X. Fan work but i got no screen, its pretty old comp tough, Dell precision 530 (2001-2002) Can't find your answer ? Ask ! Publish Related resources: ForumAGP 8x card in an AGP 4x slot Forumagp 8x graphics card on agp 4x slot ? ForumAGP 8x and 4x Cards ForumCompability between 4x motherboard and 8x agp graphic card ForumRadeon 3850 AGP 8x or PCI-E 4x ForumAgp 4x or 8x identification ForumHow much performance is lost between AGP 4x from AGP 8x ? ForumAGP 4x vs. 8x ForumAGP 8X on 4X slot ForumAGP 8X in 4X MB ForumAGP 4x or 8x ?? ForumAGP 4x or 8x Forum4x or 8x AGP Forum8x vs 4x AGP PE vs SIS655/Granitbay ForumNew Build GPU Question. BF3 Main Game(getting rdy for BF4) 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 !