Originally posted by: BonzaiDuck
Ya know -- I'm getting an itch from change in my pocket (so to speak.)
Since it's the voltage that produces the most thermals, I can't see why I wouldn't be able to get to . . . . . somewhere between 3.4 and 3.6 at that same voltage. You're saying that your core temperatures are hitting 60C on water-cooling at 82F room-ambient?
AigoMorla got that far with his G0 on water, but I THINK it was a G0 and he'd pushed the voltage to 1.45+. Maybe it was a B3-stepping.
And if it's a G0, maybe it's the luck of the draw. 1.35V. Geeesh!!
"Ah be sorely temp-et-ed to ge-at mah-self a G0!!"
No my load temps are hitting 60C with stress tests..
As far as concerns the voltage..
It has to do with the vid (Voltage identification). If you look at Coretemp there's an indication that says a number. Mine's 1.2250 which is good. Not the best but really good and hard to find. Usually vid is higher in G0s, hence the higher need for vcore. If you are very lucky you may even find G0s with lower vid than mine. But it is very difficult and 1.225 is very good as I said..You wanna know the fun part? I can post and run PI and benchmarks at 1.26v@3.6GHz!! :laugh:
Some info that you might find interesting..
From the C2D datasheet.
2.3 Voltage Identification
The Voltage Identification (VID) specification for the processor is defined by the Voltage
Regulator-Down (VRD) 11.0 Processor Power Delivery Design Guidelines For Desktop
LGA775 Socket. The voltage set by the VID signals is the reference VR output voltage
to be delivered to the processor VCC pins (see Chapter 2.6.3 for VCC overshoot
specifications). Refer to Table 14 for the DC specifications for these signals. Voltages
for each processor frequency is provided in Table 5.
Individual processor VID values may be calibrated during manufacturing such that two
devices at the same core speed may have different default VID settings. This is
reflected by the VID Range values provided in Table 5. Refer to the Intel® Core?2 Duo
Desktop Processor E6000 and E4000 Sequence and Intel® Core?2 Extreme Processor
X6800 Specification Update for further details on specific valid core frequency and VID
values of the processor. Note this differs from the VID employed by the processor
during a power management event (Thermal Monitor 2, Enhanced Intel SpeedStep®
Technology, or Extended HALT State).
...
The processor provides the ability to operate while transitioning to an adjacent VID and
its associated processor core voltage (VCC). This will represent a DC shift in the load
line. It should be noted that a low-to-high or high-to-low voltage state change may
result in as many VID transitions as necessary to reach the target core voltage.
Transitions above the specified VID are not permitted. Table 5 includes VID step sizes
and DC shift ranges. Minimum and maximum voltages must be maintained as shown in
Table 6 and Figure 1 as measured across the VCC_SENSE and VSS_SENSE lands.
The VRM or VRD used must be capable of regulating its output to the value defined by
the new VID. DC specifications for dynamic VID transitions are included in Table 5 and
Table 6. Refer to the Voltage Regulator-Down (VRD) 11.0 Processor Power Delivery
Design Guidelines For Desktop LGA775 Socket for further details.
Vid chages due to energy savings from Intel VRD 11.0 spec (cpu voltage regulator).:
Dynamic-Voltage Identification Functionality
VRD11 architecture includes the Dynamic Voltage Identification (D-VID) feature set,
which enables the processor to reduce power consumption and processor
temperature. Reference VID codes are dynamically updated by the processor to the
VRD controller via the VID bus when a low power state is initiated. VID codes are
updated sequentially in 12.5 mV steps and are transmitted every 5 microseconds until
the final voltage code is encountered. Processors are capable of transitioning from
standard operational VID levels to either the VR11 or extended VR10 VID table
minimum values. They are also capable of returning to a higher VID code in a similar
manner. The low voltage code will be held for a minimum of 50 microseconds prior to
sequentially transitioning through the VID table to a new voltage reference which can
be any higher VID code, but is generally the original reference VID.
Facebook
Twitter