1366 X58 Xeon 5650

Ricimer · 3 Mar 2015 at 23:06

It's not a production chip, it's not on ARK. also 130w 4.4GHz dual core...

nick_000000 · 6 Mar 2015 at 16:33

Just picked up a 5670 for £90 and literally dropped it into my CPU socket last night managed to bend a pin in the corner of the socket

, managed to fix it with some tweesers and a pin after pooping my pants a little bit.

Managed to clock it up to 4.4 but it wasn't passing 10 passes on IBT and the temps were getting past 70C, got it stable at 4.2 but I have dropped it down a little as I want to make sure that the boost doesn't make things unstable.

Bint Box · 6 Mar 2015 at 18:38

Hi,

I had my Xeon 5650 CPU in an ASUS P6T SE board running OK at 4.0GHz with 6gb (3 x 2gb) Corsair Dominator RAM using manual overclock settings. I swapped out the Corsair RAM and replaced it with 24gb (6 x 4gb) of Kingston HyperX RAM and now cannot complete an Intel Burn test at maximum. Do I need to do some memory configuration in the BIOS to get the HyperX RAM to be stable for the overclock. All the settings were identical for both RAM types, its just that the overclock was stable with the Corsair Dominator but not with the HyperX?

http://www.kingston.com/datasheets/k...9d3k3_12gx.pdf

Above is a link to the Kingston HyperX I was using.

My settings for CPU Xeon 5650 @ 4.00 GHz are:

CPU Ratio 20
Intel Speed Step Enabled
BCLK Frequency 200
PCIE Frequency 100
DRAM Frequency DDR3-1603 MHz
UCLK Frequency 3208 MHz

CPU Voltage 1.28125
CPU PLL Voltage Auto
QPI DRAM Core Voltage 1.3625
IOH Voltage 1.20
IOH PCIE Voltage Auto
ICH Voltage 1.20
ICH PCIE Voltage Auto
DRAM BUS Voltage 1.64
All Other Settings Auto

From reading through this topic it seems that its better to run RAM specified as 1600MHz at 1333MHz. Can anyone please tell me how I reduce the RAM speed from 1600MHz to 1333MHz, is it a voltage reduction somewhere?

Any help most appreciated to get the 24gb RAM working OK.

Thx

Stu · 7 Mar 2015 at 07:26

You might find that your system won't overclock as well with 6 ram stocks compared to 3. To drop the ram speed, you have to take the speeds offered to you, ship you can't have 1333 when the bclk is 200.... I'm not at home to check, but I think you'll have an option of around 1200.

Bint Box · 7 Mar 2015 at 07:42

Stu said:
You might find that your system won't overclock as well with 6 ram stocks compared to 3. To drop the ram speed, you have to take the speeds offered to you, ship you can't have 1333 when the bclk is 200.... I'm not at home to check, but I think you'll have an option of around 1200.

Stu,

Thx for the reply.

As a novice, I am not sure which setting to adjust to lower the RAM speed, do I do this with a voltage setting or with the [DRAM Frequency] setting. I currently have DRAM Frequency at [DDR3-1603MHz] which I selected from a drop down list

When you say I have to take the speeds offered to me, are you referring to what is available via the BIOS settings? I have the overclock profile set to manual is this OK?

Thx

Stu · 7 Mar 2015 at 16:15

Yes, drop down options for DRAM frequency in BIOS. Voltage settings look OK. In fact, that's a good overclock with only 1.28v on the CPU.

Bint Box · 7 Mar 2015 at 23:17

Stu said:
Yes, drop down options for DRAM frequency in BIOS. Voltage settings look OK. In fact, that's a good overclock with only 1.28v on the CPU.

Stu,

Thx for the help, it worked, I now have the ASUS P6T SE board booting with all 6 memory slots populated (6 x 4gb)

I lowered the DRAM Frequency to the value of [DDR3-1203MHz] from the drop down list and reduced the UCLK Frequency to 2406MHz (DRAM Frequency multiplied x 2). I made one other adjustment to get "out of the red" font colour which was to lower the QPI/DRAM Core Voltage to 1.3250

I ran the RealBench 2.41 benchmark test and stress test and both completed OK. I have pasted below my current settings just in case they might be useful to anyone.

ASUS P6T SE, Xeon 5650 @ 4.00 GHz, 24gb Kingston HyperX Genesis RAM (6 x 4gb)

CPU Ratio 20
Intel Speed Step Enabled
BCLK Frequency 200
PCIE Frequency 100
DRAM Frequency DDR3-1203 MHz
UCLK Frequency 2406 MHz

CPU Voltage 1.28125
CPU PLL Voltage Auto
QPI DRAM Core Voltage 1.3250
IOH Voltage 1.20
IOH PCIE Voltage Auto
ICH Voltage 1.20
ICH PCIE Voltage Auto
DRAM BUS Voltage 1.64
All Other Settings Auto

Rgds
Bintos

Goody_GTI · 9 Mar 2015 at 08:33

That's a pretty nice overclock

Bint Box · 9 Mar 2015 at 14:15

Goody_GTI said:
That's a pretty nice overclock

It's more to do with luck and reading some of this topic rather than skill. I have had to sacrifice the memory speed of 1600MHZ and drop it down to 1200MHz in order to get the PC to boot into the overclock with all six memory slots populated.

It passes the RealBench 2.41 stress test over a fifteen minute period so is stable in that respect. However, it fails an IntelBurn test on "Maximum". There is something lurking around that is niggling the overclock, it might just be the quality of the Kingston HyperX Genesis RAM?

Ideally, I would like to get the overclock to pass IntelBurn on "Maximum" but it might be a bit ambitious?

Rgds
Bintos

DragonQ · 9 Mar 2015 at 16:46

It is odd reading comments from people saying they have an overclock that doesn't pass a certain stability test. When I first built this rig that wasn't the prevailing attitude at all - the rig's either stable or it isn't. I don't remember anyone talking about rigs that would be "fine" in games but crash during stress tests or whatever. Doesn't seem worth the risk to me - if I can't get through 10 passes of IBT at High/Max then I increase voltage and/or lower clock speed. :/

Trancer · 15 Mar 2015 at 16:22

Where are you guys buying these? eBay?

STutheTerrorisT · 15 Mar 2015 at 16:43

A well known auction site, yes.

Trancer · 15 Mar 2015 at 17:28

STutheTerrorisT said:
A well known auction site, yes.

Thanks, so it looks like I'm after the 5670? I can only see it from The U.S.

Trancer · 15 Mar 2015 at 17:31

Stepping also states B1. Is that the one to go for?

STutheTerrorisT · 16 Mar 2015 at 17:27

I picked up a x5660 B1 stepping from a UK based seller. Had a quick scan earlier but couldn't see any listings from them. They were based out of Salford.

Trancer · 16 Mar 2015 at 21:40

STutheTerrorisT said:
I picked up a x5660 B1 stepping from a UK based seller. Had a quick scan earlier but couldn't see any listings from them. They were based out of Salford.

Ok thanks, I do see some UK based ones selling the 5670 for £95. Is that about right?

STutheTerrorisT · 18 Mar 2015 at 14:07

Honestly couldn't say mate but seems in line with what they are going for. (I paid a little under £70 for mine.)

Stu · 18 Mar 2015 at 23:16

Trancer said:
Ok thanks, I do see some UK based ones selling the 5670 for £95. Is that about right?

Is it worth spending more versus an x5650 for £50?

DragonQ · 18 Mar 2015 at 23:44

Stu said:
Is it worth spending more versus an x5650 for £50?

Doesn't seem worth it at all, unless you have one of these crappy Asus boards that throttles the turbo boost. If not, an X5650 can get 4.4-4.6 GHz at 200 MHz BCLK. Not gonna get any higher than that even with a higher multiplier anyway.

Stu · 19 Mar 2015 at 11:54

Getting an x5670 over an x5650 will not avoid the throttling issue. Is this really an issue in real life scenarios... I don't think throttling when running IBT is much of a day-to-day concern.

If you really need to get round throttling, then crossflash the BIOS.