F5F Stay Refreshed Power Users Overclocking What voltage feeds the FCLK?

What voltage feeds the FCLK?

What voltage feeds the FCLK?

L
LorrenK
Senior Member
703
08-22-2023, 03:33 AM
#1
Which voltage supplies the FCLK and you're planning an experiment to reach the maximum stable level at standard voltage?
L
LorrenK
08-22-2023, 03:33 AM #1

Which voltage supplies the FCLK and you're planning an experiment to reach the maximum stable level at standard voltage?

T
Topaez
Junior Member
32
08-22-2023, 06:19 AM
#2
You cannot manage the voltage for the fclk. It seems you're missing key settings in Skylake. Adjusting BCLK only affects FCLK slightly, without real performance improvement—it depends on the VCore voltage. That's what ensures stability. However, this approach will also overclock other components, making it hard to attribute performance gains solely to FCLK changes.
T
Topaez
08-22-2023, 06:19 AM #2

You cannot manage the voltage for the fclk. It seems you're missing key settings in Skylake. Adjusting BCLK only affects FCLK slightly, without real performance improvement—it depends on the VCore voltage. That's what ensures stability. However, this approach will also overclock other components, making it hard to attribute performance gains solely to FCLK changes.

Q
QuintenvH2001
Member
183
08-22-2023, 07:23 AM
#3
For a Skylake chip, the clock speeds are limited to 400mhz, 800mhz, and 1ghz. It's unclear if voltage adjustments are possible, but performance remains consistent across all three options.
Q
QuintenvH2001
08-22-2023, 07:23 AM #3

For a Skylake chip, the clock speeds are limited to 400mhz, 800mhz, and 1ghz. It's unclear if voltage adjustments are possible, but performance remains consistent across all three options.

D
david111love
Junior Member
14
08-22-2023, 08:54 AM
#4
If you're using a Skylake processor, the clock speeds are limited to 400mhz, 800mhz and 1ghz. I'm not sure if you can adjust the voltages for these frequencies, but I remain stable across all three options.
D
david111love
08-22-2023, 08:54 AM #4

If you're using a Skylake processor, the clock speeds are limited to 400mhz, 800mhz and 1ghz. I'm not sure if you can adjust the voltages for these frequencies, but I remain stable across all three options.

X
xSudden
Member
228
08-24-2023, 12:31 AM
#5
If you're using a skylake processor, the FCLK options are 400mhz, 800mhz, and 1ghz. I'm not sure if you can adjust the voltages for these frequencies, but I'm stable at all three. However, the actual speed depends on both FCLK and BCLK. You could increase performance by boosting BCLK while keeping FCLK fixed. In theory, yes—but practically it's unclear what the gains would be just from changing FCLK. Adjusting BCLK would actually affect the overall system overclocking. Intel recommends setting FCLK to 400mhz when overclocking with BCLK.
X
xSudden
08-24-2023, 12:31 AM #5

If you're using a skylake processor, the FCLK options are 400mhz, 800mhz, and 1ghz. I'm not sure if you can adjust the voltages for these frequencies, but I'm stable at all three. However, the actual speed depends on both FCLK and BCLK. You could increase performance by boosting BCLK while keeping FCLK fixed. In theory, yes—but practically it's unclear what the gains would be just from changing FCLK. Adjusting BCLK would actually affect the overall system overclocking. Intel recommends setting FCLK to 400mhz when overclocking with BCLK.

M
Mr_Pickle_PVP
Junior Member
6
09-09-2023, 06:11 AM
#6
If you're using a skylake processor, the FCLK options are 400mhz, 800mhz and 1ghz. I'm not sure if you can adjust the voltages for these frequencies, but I remain stable across all three. However, the actual speed depends on both FCLK and BCLK. You could increase performance by boosting BCLK while keeping FCLK fixed. In theory, yes—but in practice it's unclear what the gains would be just from changing FCLK. Adjusting BCLK would essentially overclock the whole system, which isn't recommended for stability. Intel recommends setting FCLK to 400mhz when overclocking with BCLK to avoid losing those benefits.
M
Mr_Pickle_PVP
09-09-2023, 06:11 AM #6

If you're using a skylake processor, the FCLK options are 400mhz, 800mhz and 1ghz. I'm not sure if you can adjust the voltages for these frequencies, but I remain stable across all three. However, the actual speed depends on both FCLK and BCLK. You could increase performance by boosting BCLK while keeping FCLK fixed. In theory, yes—but in practice it's unclear what the gains would be just from changing FCLK. Adjusting BCLK would essentially overclock the whole system, which isn't recommended for stability. Intel recommends setting FCLK to 400mhz when overclocking with BCLK to avoid losing those benefits.

I
idinosev
Member
175
09-12-2023, 09:45 PM
#7
I believe this will likely require trying different approaches since results may vary between chips. You could look up others' bclk OC configurations by searching online and begin from there.
I
idinosev
09-12-2023, 09:45 PM #7

I believe this will likely require trying different approaches since results may vary between chips. You could look up others' bclk OC configurations by searching online and begin from there.

G
GorkemCB
Member
75
09-12-2023, 10:32 PM
#8
Or simply adjust the voltage to around 1.35, keeping 1.4 as the upper limit, and increase it until stability is lost.
G
GorkemCB
09-12-2023, 10:32 PM #8

Or simply adjust the voltage to around 1.35, keeping 1.4 as the upper limit, and increase it until stability is lost.

B
backdoc01
Member
170
09-14-2023, 12:20 AM
#9
Vcore is meant for stabilizing the CPU, but since I'm focusing on stabilizing the FCLK, I'm curious about the voltage that powers it. VCore might not be the appropriate voltage here.
B
backdoc01
09-14-2023, 12:20 AM #9

Vcore is meant for stabilizing the CPU, but since I'm focusing on stabilizing the FCLK, I'm curious about the voltage that powers it. VCore might not be the appropriate voltage here.

_
_RedStar
Member
171
09-14-2023, 04:00 AM
#10
You cannot manage the voltage for the fclk. It seems you're missing key settings in Skylake. There are only a few options for fclk, and controlling the voltage there won't improve performance beyond what BCLK already provides. Adjusting BCLK affects FCLK slightly, but the real impact comes from the vcore voltage. This method helps maintain stability, though it may also cause other components to overclock, making it hard to isolate performance gains from FCLK alone.
_
_RedStar
09-14-2023, 04:00 AM #10

You cannot manage the voltage for the fclk. It seems you're missing key settings in Skylake. There are only a few options for fclk, and controlling the voltage there won't improve performance beyond what BCLK already provides. Adjusting BCLK affects FCLK slightly, but the real impact comes from the vcore voltage. This method helps maintain stability, though it may also cause other components to overclock, making it hard to isolate performance gains from FCLK alone.