Errors on stock speeds

Danm54 · 29 Nov 2009 at 16:21

As above, im getting errors on Prime95 Blend test at stock speeds.

Running a Gigabyte P35 mobo, 4gb DDR3 RAM, Q9550 CPU, all on stock, everything in BIOS on auto.

Im thinking its my RAM as ive just swapped from 8gb of DDR2 (which failed) its running at 1.5v is this enough?

My old setup OC'd to 3.6ghz stable

Thanks in anvance

twist3d0n3 · 29 Nov 2009 at 16:30

lol 1.5v is way too low - try 2.1v as most seem to be rated at that for ddr2

what speed ram is it btw?

Danm54 · 29 Nov 2009 at 19:27

Its DDR3 RAM, runs at 1066mhz

.walls · 29 Nov 2009 at 19:57

twist3d0n3 said:
lol 1.5v is way too low - try 2.1v as most seem to be rated at that for ddr2

what speed ram is it btw?

Depends on what RAM he has. 1.5v is fine for most DDR3, but some takes a little bit more.

OP - What RAM are you running?

EDIT - also...does your rig pass memtest?

Danm54 · 29 Nov 2009 at 23:49

not tried memtest, ill give it a go tomorrow.

Im running OCZ RAM, dont think i can manually adjust the RAM voltage

.walls · 30 Nov 2009 at 11:28

Danm54 said:
Im running OCZ RAM, dont think i can manually adjust the RAM voltage

yeah... a bit more info other than the manufacturer might be useful! Try googling the code on the side of the sticks. The OCZ website should give you the rated voltage and the maximum voltage.

You will be able to change the RAM voltage unless you're using something like a Dell/HP/Pack Bell oem motherboard. have a look for things like "vdimm" or "ddr voltage"

twist3d0n3 · 30 Nov 2009 at 11:50

i'm confused; you've just swapped from ddr2 to ddr3? i was under the impression you either had ddr2 or ddr3, not the choice of either? never used a gigabyte board so don't know if this is one of those weird ones with both slots.

.walls · 30 Nov 2009 at 12:12

twist3d0n3 said:
i'm confused; you've just swapped from ddr2 to ddr3? i was under the impression you either had ddr2 or ddr3, not the choice of either? never used a gigabyte board so don't know if this is one of those weird ones with both slots.

No idea about Intel kit, but you can do this on AMD AM2+ kit.

Danm54 · 30 Nov 2009 at 17:40

This is the memory ive got
http://www.overclockers.co.uk/showproduct.php?prodid=MY-181-OC

The board has 4 slots for DDR2 and 2 for DDR3, ive got a ddr overvolt that allows me to add +0.7v max

Sorry for being vague, its my first problem with RAM, in a bit of a noob!

Thanks for the replies though

twist3d0n3 · 30 Nov 2009 at 18:03

try running your ram at 1.65v as that is what it's rated at for 1600fsb. 1.5 is too low imo, if it's rated at 1.65, use it - 0.15v isn't going to add a lot of heat etc, so just stick it to that and it should be ok

Danm54 · 30 Nov 2009 at 18:17

I can ony go up in steps of 0.1v

Ive set it at +0.1v and manually adjusted the frequency to 1333mhz, instaed of 1066mhz
Its on test 3 now in Prime95 while it failed almost instantly before. Can you run it at too low a frequency?

twist3d0n3 · 30 Nov 2009 at 18:19

not really, just means less performance at the end of the day.

have you updated your bios? might give you the option to increase in smaller increments.

Devrij · 30 Nov 2009 at 18:20

That wouldn't be the problem, sounds like you just needed some more juice to keep them stable.

.walls · 30 Nov 2009 at 20:32

Danm54 said:
I can ony go up in steps of 0.1v

Ive set it at +0.1v and manually adjusted the frequency to 1333mhz, instaed of 1066mhz
Its on test 3 now in Prime95 while it failed almost instantly before. Can you run it at too low a frequency?

Try memtest with +0.1v, if it fails, try +0.2v, etc. Also... what board to you have? does it support 1600 natively? i.e. does the support say 1600 oc? If it does, then you're overclocking your board to get the RAM at that speed, so it might be the board that's failing you.

Additionally, I believe that 1.65v is what it's rated up to rather than what it's rated at. I have some OCZ (can't remember what stuff off the top of my head) and it's happy at 1.6v (I can't test lower, as my mobo won't let me!)

EDIT2: also... try adding more juice to your NB

Danm54 · 30 Nov 2009 at 22:49

My board is a Gigabyte P35C-DS3R

2 x 1.5V DDR3 DIMM sockets supporting up to 4 GB of system memory
Dual channel memory architecture
Support for DDR3 1333/1066/800 MHz memory modules

Thats from the board specs, that mean i can run a max of 1333 or will it OC for a bit more?

Appreciate the help people

SMAndy · 1 Dec 2009 at 13:01

Increase the Northbridge voltage by 0.1, and the RAM voltage by 0.2. This should help

You should be able to OC to higher memory speeds, but you'll possibly need good cooling to manage it.

Danm54 · 1 Dec 2009 at 17:27

All my voltages were +0.1 except the DDR voltage.

Ill start my OC as it is and see how far i get, may need to up them as i get to 3.5ghz but ill see how it goes.

Also, CPU-Z still shows my memory voltage at 1.5v is this normal or should it show 1.6v now?

.walls · 1 Dec 2009 at 23:11

Danm54 said:
Also, CPU-Z still shows my memory voltage at 1.5v is this normal or should it show 1.6v now?

Erm... dunno... I use lm_sensors - but I have a very different OS from you!

I suspect that either cpu-z is wrong or your mobo is under-volting your kit. Try some other monitoring tools (I have no idea what's good in windows, sorry)