Throttlestop 8.48 on HP Z400.
Throttlestop 8.48 on HP Z400.
Hello Guys,
I purchased an HP Z400 machine with an Intel Xeon W3680 processor, which I suspect has an unlocked multiplier. When attempting to overclock using throttlestop 8.48, the multiplier slider caps at x26. I’m unsure if I’m making a mistake.
Additionally, I’ve used the Intel Xtreme Tuning Utility but it doesn’t display anything in Advance Tuning—where the overclock controls are supposed to be. (I thought those were where the sliders would be.)
Could someone help me get this CPU to overclock?
Thanks.
Consider adding heatsinks to the VRM MOSFETs. Manufacturers often omit this feature to reduce costs. The performance you observe is likely the maximum achievable by the motherboard. It wasn't built for overclocking, so you might need to push it a bit further. Proper airflow around the VRM area is essential too. I'm not sure about HP, but the 24-pin version from that earlier Dells model seemed typical. You can either modify some old GPU heatsinks or purchase replacements. Two-sided thermal tape works well, or Arctic offers a two-part epoxy solution. Some users even use superglue due to its thin application. I haven't tried it myself.
Check this out for possible solutions.
https://www.techpowerup.com/forums/threa...st-3710106
A lot of this is uncharted territiory. I have put your question to the Developer of TS to see what he thinks. The Extreme series CPUs respond. The unlocked Xeons are an experiment at this time. Can you raise Voltage?
Aftermarket PSUs fit. heatsinking the VRM MOSFETs can make abig difference also.
Here's how my OEM MB runs.
http://valid.x86.fr/top-cpu/496e74656c28...393347487a
The standard multiplier setting for a Xeon W3680 is 25. When applying ThrottleStop, you must change the Set Multiplier value to the default plus one. This instructs the CPU to provide its maximum turbo boost. That means 25 plus 1 equals 26, which explains why the ThrottleStop Set Multiplier reaches that limit.
william p :
A lot of this is uncharted territiory. I have put your question to the Developer of TS to see what he thinks. The Extreme series CPUs respond. The unlocked Xeons are an experiment at this time. Can you raise Voltage?
Aftermarket PSUs fit. heatsinking the VRM MOSFETs can make abig difference also.
Here's how my OEM MB runs.
http://valid.x86.fr/top-cpu/496e74656c28...393347487a
Thanks man, i have learned alot about throttle stop from the link
The standard multiplier setting for a Xeon W3680 is 25. When applying ThrottleStop on these processors, you must change the Set Multiplier value to the default plus one. This instructs the CPU to provide maximum turbo boost. 25 plus 1 equals 26, which explains why the ThrottleStop Set Multiplier reaches that limit.
If your processor is unlocked, you should be able to access the Turbo Power Limits (TPL) section in ThrottleStop and modify your turbo settings further. This method allows overclocking older Core i CPUs. I’m unsure if the W3680 is unlocked. Even if it is, some manufacturers may have embedded a lock bit in the BIOS to stop overclocking. In that scenario, you won’t be able to push this CPU beyond its limits without a custom BIOS—likely unavailable for your HP motherboard.
Please share some screenshots of the TPL window. Are the controls there locked? ThrottleStop verifies the lock bit, so this should indicate whether overclocking is possible.
Yes, I can open the TPL tab and tweak TDP and TDA, but I haven’t done that yet. However, I increased the multiplier in TRL for each core individually (as shown in image1).
[image1 link]
Now, when I set the multiplier via TRL to 32 on every core, the system crashed. It might be due to insufficient voltage, as indicated in image1. Why is that?
Additionally, can I raise the TDP in the TPL settings to offset low voltage? Also, what does TDC stand for?
PS: Here’s the TPL window image (https://drive.google.com/open?id=0B-CUhD...mNiUHRGZzg).
The initial Core i CPUs lack software control over voltage settings. Without a voltage choice in the BIOS, options are limited. Increasing the multiplier can boost voltage but isn’t the best approach. Eventually, you’ll face either excessive power or insufficient voltage, causing instability.
Can you share a ThrottleStop screenshot with a 30 or 31 multiplier? Apply stress via threads on the built-in TS Bench test and include CPU-Z for verification.
You only need to adjust power limits if the CPU is throttling under load. Stress tests like Prime95 will push it past 130 Watts or 110 Amps, triggering a slight multiplier reduction to keep power stable. If this happens, raising either limit should restore full performance. The trade-off remains: higher frequency means more voltage and heat.
I own the version 2 Z400 (6 DIMM slots) and a W3680. The newest BIOS version 3.60 is available from HP. I verify that ThrottleStop 8.50 supports a multiplier of 45. I run all six cores at 31x. If I set the multiplier to 32 and stress the machine, the system will crash without a blue screen—it simply powers off, similar to my Sager laptop when I exceeded the 240w PSU.
I can also fine-tune TDP and TCD values as desired.
I’m curious if upgrading the power supply would help. I know the 24-pin connector will require some changes to function properly. I have a 24-pin extension cable on my way, which could allow me to adjust it without damaging the one connected to my EVGA 600w PSU.