breaker Posted January 25, 2008 Share Posted January 25, 2008 Perhaps this is a question for Gigabyte, but here goes. In my Motherboard manual, the specifications state the two 1.5V DDR3 DIMM sockets support up to 4 Gigs of memory and the four 1.8V DDR2 DIMM sockets support up to 8 Gigs of memory. Then on their website, and on Corsairs' website, DDR2 RAM with higher voltage ratings are recommended for the GA-P35C-DS3R motherboard. So, why do they say that, and then put a big red warning about the DDR voltages being non-optimized in the BIOS after you have to manually add .4 volts to the bus? :sigh!: Another question, is the RAM industry headed toward making this faster RAM consume less power, and thus generate less heat? Thanks! breaker Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 26, 2008 Corsair Employees Share Posted January 26, 2008 Because it is over clocking and GigaByte like most of us have to protect them selves and if one wants to over clock they need to understand they are doing it at a risk, your own! Another question, is the RAM industry headed toward making this faster RAM consume less power, and thus generate less heat? Yes as the Voltage comes down they will consume less power, but memory does not consume the most power at this time. CPU and Video Cards are the biggest power draw. Link to comment Share on other sites More sharing options...
breaker Posted January 26, 2008 Author Share Posted January 26, 2008 Because it is over clocking and GigaByte like most of us have to protect them selves and if one wants to over clock they need to understand they are doing it at a risk, your own! In my motherboard book, it states that the DDR2 bus can run memory at 800MHz. The Corsair RAM I have is rated for 1066MHz. However, the RAM requires 2.1V, even when I run it at 800MHz. Using SPD, the motherboard automatically sets the voltage at 1.8V. When I used SPD, yes, the timings are much different, but the RAM won't run at all until I increase the voltage to 2.1V. How can this be considered overclocking? All I know is that 1) SPD and the Gigabyte automatic voltage optimization does not work correctly with this RAM. 2) I had to change the voltage manually to get it to run. 3) After doing so the motherboard has bad red warning messages saying the voltage is not optimized (but it won't run any other way)! 4) Both Corsair and Gigabyte recommend this RAM for the motherboard, even though this motherboard likes 1.8V RAM better. Yes as the Voltage comes down they will consume less power, but memory does not consume the most power at this time. CPU and Video Cards are the biggest power draw. My question was more about heat generated, and if the industry is going to make lower voltage RAM at these speeds. Thanks a bunch, breaker Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 30, 2008 Corsair Employees Share Posted January 30, 2008 1) SPD and the Gigabyte automatic voltage optimization does not work correctly with this RAM. A: That maybe as they are not tested at those settings, please test the modules at the tested settings to be sure. 2) I had to change the voltage manually to get it to run. 3) After doing so the motherboard has bad red warning messages saying the voltage is not optimized (but it won't run any other way)! A: Please see the answer for question 1. And that is just a warning and is normal I think most MB's will issue a warning on DDR2 over 2.0 Volts (IE +- 10%) 4) Both Corsair and Gigabyte recommend this RAM for the motherboard, even though this motherboard likes 1.8V RAM better. A: I cannot comment for Gigabyte and I would encourage you to contact them directly. But the modules in question have tested settings and would need to be ran at those settings to ensure proper operation running them out of spec would be at your own risk. As long as you do not go over the Voltage specified should they ever fail we would be happy to replace them. My question was more about heat generated, and if the industry is going to make lower voltage RAM at these speeds. A: I suspect that is part of it but mostly its the flow in general to get the memory running at a lower voltage as the DIE shrinks that will have to happen and in fact with later DDR1 IC's most of the IC's had Voltage regulation internally in the IC's stepping down the Voltage bellow spec. JEDEC Spec for DDR was 2.6 Volts +- 1.0 Volts. The point being that as CPU, Chipset and memory technology shrinks the DIE's they will have to run lower voltages in order to reach higher frequency's with out taking a Cummings Diesel Generator to provide enough power. Link to comment Share on other sites More sharing options...
breaker Posted January 30, 2008 Author Share Posted January 30, 2008 A: That maybe as they are not tested at those settings, please test the modules at the tested settings to be sure. A: Please see the answer for question 1. And that is just a warning and is normal I think most MB's will issue a warning on DDR2 over 2.0 Volts (IE +- 10%) Yeah, when I first got them I let the mobo try to do its thing automatically, then I read online that doesn't always work. Part of it was like many others, I didn't realize one had to do the CTRL+F1 to enter "advanced" mode, and I thought settings couldn't be input manually. Please realized the last computer I built before this one had ordinary PC-133 SDRAM which worked fine with 4 sticks on a super 7 motherboard, I didn't even consider tweaking, it just ran at the bus speed. But I am quickly learning the ways of DDR. A: I cannot comment for Gigabyte and I would encourage you to contact them directly. But the modules in question have tested settings and would need to be ran at those settings to ensure proper operation running them out of spec would be at your own risk. As long as you do not go over the Voltage specified should they ever fail we would be happy to replace them. Understood. I was worried it might be bad for the motherboard, but I am now thinking that wouldn't make sense. Also, I will ask Gigabyte. A: I suspect that is part of it but mostly its the flow in general to get the memory running at a lower voltage as the DIE shrinks that will have to happen and in fact with later DDR1 IC's most of the IC's had Voltage regulation internally in the IC's stepping down the Voltage bellow spec. JEDEC Spec for DDR was 2.6 Volts +- 1.0 Volts. The point being that as CPU, Chipset and memory technology shrinks the DIE's they will have to run lower voltages in order to reach higher frequency's with out taking a Cummings Diesel Generator to provide enough power. LOL. Yes, getting the die smaller is the key. Thanks much, breaker Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 30, 2008 Corsair Employees Share Posted January 30, 2008 No problem and please let me know if you have any more questions! Link to comment Share on other sites More sharing options...
breaker Posted January 31, 2008 Author Share Posted January 31, 2008 One more... are there any DDR2 where SPD is 1066 yet? If there was, would it help with running 4 sticks at 1066? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 31, 2008 Corsair Employees Share Posted January 31, 2008 No the SPD would be set to the Max spec that is for the specific module and that MB'e would see IR DDR2-800 at Cas 5-5-5-18 at 1.8 Volts. Link to comment Share on other sites More sharing options...
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