Solved Corsair XMS2 1066 Mhz Running @ 245 Mhz Tags: Memory Corsair Last response: December 8, 2012 2:47 PM in Memory Share Edszx December 1, 2012 2:12:43 PM Well i think this is a very simple and basic question, this is my pc: S.O: Win7 x64 SP1 CPU: AMD Athlon 64 X2 4200+ @ 2.2 Mhz (No OC) GPU: Geforce 8400 Gs 512 Mb DDR2 @ 559/1489/309 RAM: Corsair XMS2 1066 (Version 4.1) (2x2 GB) MOBO: ALiveNF6P-VSTA HDD: Western Digital Caviar Blue 80 GB Optical Drive: Sony AD-7240S Audio: Sound Blaster Audigy SE @ X-FI Xtreme Audio My MOBO only supports DDR2 800 memory, but im using these 1066 corsair ones and they work. The problem is that they underclock to 245 Mhz!! I dont know if my CPU is the reason, maybe, but i suppose i can make the clocks go a little high (667 at least). Can someone help me to know if i can OC them or leave them as this? More about : corsair xms2 1066 mhz running 245 mhz Best solution rolli59 a c 174 } Memory December 1, 2012 3:55:16 PM You should be able to set them manually to 400 which in DDR means 800. Edszx December 8, 2012 2:47:22 PM Best answer selected by Edszx. Can't find your answer ? Ask ! Publish Related resources: ForumCorsair 's XMS2 Dominator: The World's Fastest DDR2? Forum1066mhz ram running at 800 mhz ? ForumGA-X48-DS4 + Corsair 2x2GB DDR2 800 MHz XMS2 DHX Memory ForumCorsair XMS2 800 mhz RARE problem ForumMemory won't run at 1066 MHz ForumDDR2 RAM: Better performance with 5GB @ 800 MHz or 4GB @ 1066MHz ? ForumDDR2 RAM at 1066MHz (EPP Enabled), System becomes unstable. ForumMotherboard does not see 1066mhz only 800 why ForumMixing 2 x 1GB 800 MHz with 2 x 1GB 1066MHz ForumPC2 8500 1066MHz ...worth paying for ? Forum4-4-4-12 , 5-5-5-15, 800 or 1066mhz ...??? ForumHow well does the Corsair DDR2 XMS2 OC? ForumGigabyte GA-P43-ES3G rev 1.1, Corsair XMS2 DHX 2x2GB DDR2 800 (PC6400) ForumWorth buying Corsair DDR2 XMS2 ? ForumCorsair xms2 DHX timings problem!!!! ForumP7h57, i5-760 and 2x8gb ForumMaximus IV Extreme LGA, Corsair Memory Upgrade ForumCorsair vengance 1866 2x4gb running at 1600mhz ForumLaptop intel core i3 with RAM corsair Vengence 2X4GB 1600mhz ForumCORSAIR CML16GX3M2A1600C10R and Gigabyte GA-990FXA-UD3 More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !