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Overclocking DDR2 from 800Mhz to 1066Mhz, is it worth the risk?

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July 12, 2011 10:09:58 PM

Hello, just have a quick one about over clock RAM. Will I see a big difference in trying to over clock my RAM from 800Mhz to 1066Mhz? Here are my system specs:


AMD Phenom II X4 945 Deneb (Overclocked to 3.6GHz) Socket AM3 125W Quad-Core Processor
GIGABYTE GA-MA785G-UD3H AM3/AM2+/AM2 AMD 785G HDMI ATX AMD Motherboard
COOLER MASTER V8 RR-UV8-XBU1-GP 120mm Rifle CPU Cooler Intel Core i7 compatible
Kingston HyperX T1 Series 8GB 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model KHX8500D2T1K2/4G
2 Cross-fired MSI R5770 Hawk Radeons 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card
2 Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
XION Power Real XON-1250P14HE 1250W ATX 12V v2.2 / EPS 12V v2.91 / SSI v2.92 SLI 3 ways SLI supported.
Thermaltake Element S VK60001N2Z Black SECC ATX Mid Tower Computer Case


I was trying to overclock this system once before and I might have added too much voltage I think because my PC wouldn't post. I then had to pull the reset switch on the bios out to get the factory defaults. I don't think adding more then 2.2 volts with DDR2 will hurt anything however I am a bit nervous when it comes to over volting and I don't know if its even worth it to take the risk. If someone has overclocked RAM before with my configuration then please help. Thanx.
a b } Memory
a b K Overclocking
July 12, 2011 10:18:16 PM

The Ram is rated 2.2-2.3 you should be fine
July 12, 2011 10:35:38 PM

Ok thanks. Its just that when I go into the bios and start to raise the voltage above 2.0. The numbers start changing to red like I am going to blow up my system if I go beyond 2.0! I guess I will just give it a shot and see what happens...
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a b } Memory
a b K Overclocking
July 13, 2011 1:14:59 AM

You should be fine, but don't expect to see a massive upsurge in performance. OCing RAM doesn't provide the increases in performance you get with OCed CPUs and GPUs. You really need to verify that your system is stable afterward. Increase incrementally and you'll be fine.
a b } Memory
a b K Overclocking
July 13, 2011 2:38:35 AM

Wow I can't believe they are rated that high
mine is rated 1.9 @ 1066mhz
July 13, 2011 1:40:43 PM

OK I tried it and this is what happened...

No voltages would work past the normal 1.8v. I tried 1.9 up to 2.2. No go...
I was pissed. I was thinking that newegg had gotten me again with false advertising and I was cursing Gigabyte and Kingston! However I was using other people’s timings and voltages and I thought that it would work the same on my configuration too. That was not the case. Heck the manufacture states they work with 5.5.18.5 at 1.8v to 5.5.15.5 at 2.2v. When I raised the voltage it simply wouldn't post. So I came across someone that stated that they had them running at 1066mhz with no voltage increase or timing changes. Strange so I tried it without increasing voltage and it worked! I tried this before and it didn’t work. However this time I changed the timings manually to 5.5.18.5. Also my FSB was raised to so the CPU overclock. That must have made the difference. Sadly I was only able to increase them to 960Mhz =/ Because I have a locked multiplier on my CPU therefore I was not able to match the highest speeds of the FSB and CPU and RAM all together perfectly. One time they did start at 1279MHz but is was short lived. Anyways I am good with this overclock and learned a hard lesson about buying a locked CPU.
!