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[Official] MSI 790FX-GD70 Owners Club - Page 319

post #3181 of 9641
Quote:
Originally Posted by hacksaw907 View Post
You could try these. They apparently overclock well since their default voltages are ridiculously low.

http://www.newegg.com/Product/Produc...-321-_-Product
"With just 1.5 volts I've had these up to 2100mhz"........... I wish I knew about these before I bought my Ripjaws.
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post #3182 of 9641
Quote:
Originally Posted by Gixbit View Post
So if your ram is unstable, at certain timings how do you make it stable?

And what is the difference between raising CPU VID instead of CPU Voltage in the GD70 bios.

And how high should you raise the VID? Does anyone know where to point me? Don't exactly feel like going on a suicide run.
Look at the CPU VID voltage as the CPU's Voltage I.D. Or IDentification.

So if the CPU VOltage is Set to 1.30 you next bump would be 1.40v. So what the CPIVID does, is allow you the .025 steps in between each .1v step. But also gives the CPU Voltage it's base voltage. If that makes sence.

Quote:
Originally Posted by BlackOmega View Post
To stabilize your RAM there are a few things you can do. First and foremost make sure the voltage for the sticks is set appropriately, the GD70 tends to undervolt RAM.
Then depending on your NB frequency, adding voltage to the CPU/NB can help.
And after Mastiffman's testing we've concluded that adding CPU PHY voltage also helps to stabilize it.

As for the CPU VID, that's more of a reference point for the board. It tells it what the default voltage is/should be. I believe that would be the equivalent to CPU start up voltage. Also, I've noticed that depending on where it's set to, it changes the "safe" range on the CPU voltage.

So set the CPU VID to 1.30 or 1.35v (stock voltage is up to 1.35v).
And use the CPU voltage to set what you want the actual CPU voltage to be.


On a side note, I've managed to stabilize my RAM @ DDR3 1600 with 7-7-7-21-28-1T timings (2600 NB). So far it's 5.5 hours prime95 stable. (Going to try CAS 6 when I get back from Frankenmuth).

I also messed around slightly with overclocking it last night, got it to 1704MHz. Was somewhat stable, but all of the settings were so....ugly that I just reverted back to 1600 for the time being.

For you guys that have messed around with the CPU PHY voltage, have you noticed that it changes your CPU-NB voltage? I have my CPU/NB voltage set to 1.39 in BIOS yet Everest shows it being 1.42v.
Yes.

EDIT:

Quote:
"With just 1.5 volts I've had these up to 2100mhz"...........
not on an AMD System....
Edited by Mastiffman - 12/22/09 at 1:41pm
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post #3183 of 9641
Quote:
Originally Posted by hybridfury View Post
Should I make any changes to the tRFC0, tRFC1, tRFC2 and tRFC3 settings in the bios? My memory has manufacturer timings of 7-7-7-20 @1.9v. In memory Z it displays 7-7-7-20-59-8-4-4-4 with 59 being the the DRAM TRFC. That 59 seems high to me, should it be this high? In windows in cpu-z my timings show as 7-7-7-20-27 in 1T mode. Originally it was showing as 7-7-7-20-40something in 1T mode until I manually changed the tRC to 27.

Edit: I'm not trying to OC, I'm just trying to get the most out of the RAM that it actually advertises.
Still looking for some insight/answers to my above quoted post from about 6 or 7 pages back please.
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post #3184 of 9641
hey guys i got the Gigabyte 790FXTA-UD5 today. So far so good. I like the bios of the MSI way better. Overclocking I won't know until I actually get this cpu under some cold.

However, check the pic for megahalem results

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post #3185 of 9641
Quote:
Originally Posted by hybridfury View Post
Still looking for some insight/answers to my above quoted post from about 6 or 7 pages back please.
2 things here.

1. tRC = Row Cycle Time that Should be calculated to be At Least the sum of (tRC= CL +tRAS). So 27 is fine. Your tRAS technically should be 21 (tRAS = CL+ tRCD+ tRP) I.E. 7-7-7-21-28-1T

2. tRFC= Row Refresh Cycle Time. 59CLKS is about 110ns I have found that manually setting tRFC to 160ns on all four Dimm slots (0,1,2 &3) at 1600mhz+ is best (Although increasing this to the other MSI BIOS options of 300ns or 350ns can prove to increase stability BUT at the cost of being a bit slower. I would leave this @ "auto" if under 1600Mhz.

Quote:
Originally Posted by NCspecV81 View Post
hey guys i got the Gigabyte 790FXTA-UD5 today. So far so good. I like the bios of the MSI way better. Overclocking I won't know until I actually get this cpu under some cold.

However, check the pic for megahalem results

Nice! So @ 4200mhz @ 1.584vcore you max load temp was 48*C? That's pretty sweet! How would prime95 compare, similair?
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post #3186 of 9641
I need help, please. My voltages in my BIOS appear to be locked and I ran through the entire BIOS and could not find a option to unlock them. The numbers are grayed out and no keys will change them. I had BIOS version 1.3 (out of the box) so I flashed to I believe 1.7 (latest on the site) and still no control over voltages. I see in the FAQ the author mearly explains key presses to change voltages, has anyone else had locked voltages? Key presses don't change them.
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post #3187 of 9641
Quote:
Originally Posted by NCspecV81 View Post
However, check the pic for megahalem results
Dayum....i want to buy that CPU of yours NCspec

Quote:
Originally Posted by Markisa View Post
I need help, please. My voltages in my BIOS appear to be locked and I ran through the entire BIOS and could not find a option to unlock them. The numbers are grayed out and no keys will change them. I had BIOS version 1.3 (out of the box) so I flashed to I believe 1.7 (latest on the site) and still no control over voltages. I see in the FAQ the author mearly explains key presses to change voltages, has anyone else had locked voltages? Key presses don't change them.
You are pressing the +/- keys or using Page up or Page down keys when trying to change the voltage?
post #3188 of 9641
Quote:
Originally Posted by Markisa View Post
I need help, please. My voltages in my BIOS appear to be locked and I ran through the entire BIOS and could not find a option to unlock them. The numbers are grayed out and no keys will change them. I had BIOS version 1.3 (out of the box) so I flashed to I believe 1.7 (latest on the site) and still no control over voltages. I see in the FAQ the author mearly explains key presses to change voltages, has anyone else had locked voltages? Key presses don't change them.
Use the actual KEYPAD's -/+ keys to change the voltages and pretty much everything else. The Arrows nxt to the Keypad section are for navigation.

Quote:
Originally Posted by Rewindlabs View Post
Dayum....i want to buy that CPU
Hey rewind,

Have you tried working down those CPU Volts yet? If so, any luck?
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post #3189 of 9641
Quote:
Originally Posted by Mastiffman View Post
2 things here.

1. tRC = Row Cycle Time that Should be calculated to be At Least the sum of (tRC= CL +tRAS). So 27 is fine. Your tRAS technically should be 21 (tRAS = CL+ tRCD+ tRP) I.E. 7-7-7-21-28-1T

2. tRFC= Row Refresh Cycle Time. 59CLKS is about 110ns I have found that manually setting tRFC to 160ns on all four Dimm slots (0,1,2 &3) at 1600mhz+ is best (Although increasing this to the other MSI BIOS options of 300ns or 350ns can prove to increase stability BUT at the cost of being a bit slower. I would leave this @ "auto" if under 1600Mhz.



Nice! So @ 4200mhz @ 1.584vcore you max load temp was 48*C? That's pretty sweet! How would prime95 compare, similair?
Cool, thanks for the feedback. I thought my tRAS should be at 21, but it's documented per the manufacturer at 7-7-7-20:

http://www.patriotmem.com/products/d...&id=840&type=1

Ok so for the tRFC It was on auto, but I have had it on 90ns and had no problems, I'll up it and see how it works that way.

One last question, why in the advanced dram config in bios are there 2 sets of options for everything? Like tRFC0,1,2, and 3 are listed twice the same as all the other settings. They are all listed in a row then again.
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post #3190 of 9641
Quote:
Originally Posted by NCspecV81 View Post
hey guys i got the Gigabyte 790FXTA-UD5 today. So far so good. I like the bios of the MSI way better. Overclocking I won't know until I actually get this cpu under some cold.

However, check the pic for megahalem results

Very nice what fans do you have on your mega?
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