Non-existant i5-760S CPU ?!?!?

[hucker]

I've bought a 2nd hand i5-760S processor. Intel do not admit to ever having made one, but it's in my computer! The reason I'm concerned is the ad said it was 2.53GHz with a max turbo frequency of 3.33GHz. Well I am getting no turbo. It's stuck at 2.53GHz - any ideas?

 

[Sardonicus]

Did you check the BIOS to see if Turbo is enabled?

Yes, it exists.
The link has the specs.
http://ark.intel.com/products/42917/Intel-Core-i5-750S-Processor-(8M-Cache-2_40-GHz)

 

[whs]

Turbo is only used with high CPU load.

 

[Hopalong X]

Intel® Core)

I didn't have any trouble finding it using Google.
Factory is 2.88GHz and turbo maximum is 3.33GHz.

 

[hucker]

Did you check the BIOS to see if Turbo is enabled?

Checked BIOS - I have tried both AUTO and ENABLED for Turbo technology (along with all the other settings on that page for CPU features.

Yes, it exists.
The link has the specs.
Intel® Core

No, mine is a 760S, not a 750S.

 

[hucker]

Turbo is only used with high CPU load.

I have it fully loaded on 4 cores using BOINC.

 

[hucker]

Intel® Core)

I didn't have any trouble finding it using Google.
Factory is 2.88GHz and turbo maximum is 3.33GHz.

That is a 760, I have a 760S - lower power, lower clock speed.

 

[Sardonicus]

What's mobo are you using?
Your specs show a 1366 Mobo, which I know isn't the mobo you're using.

 

[hucker]

Sorry, different computer. The computer in question has a Gigabyte GA-P55-US3L motherboard.

 

[Hopalong X]

Download this and open it> http://www.cpuid.com/downloads/cpu-z/1.59-setup-en.exe

Then post a screen shot or Snip please with the CPU tab showing.
It will give us your specs and settings of the CPU.
Voltages, multipliers and Turbo settings.
This would be very helpful.

Mike

 

[hucker]

I can remember that there are definitely the numbers "760" on the chip itself - I can't remember if there is an S or not. But I'm not about to remove the heatsink to find out.

Here is the BIOS screen describing the CPU - it calls it an "S 760". Note the turbo frequency is the same as the normal frequency. On other machines I see these two numbers being very different. I've not overclocked anything, and I've turned on all CPU features.

BIOS

And here is a snapshot of CPU-Z, showing it running at 2.53GHz, when all cores are fully utilized.

CPU-Z

 

[hucker]

This is from the advert where I purchased the CPU:

Status Launched
Launch Date Q1'10
Processor Number i5-760S
# of Cores 4
# of Threads 4
Clock Speed 2.53 GHz
Max Turbo Frequency 3.33 GHz
Intel® Smart Cache 8 MB
Bus/Core Ratio 19
DMI 2.5 GT/s
Instruction Set 64-bit
Instruction Set Extensions SSE4.2
Embedded Options Available No
Lithography 45 nm
Max TDP 82 W
VID Voltage Range 0.6500V-1.4000V
Recommended Channel Price $279.00

 

[Sardonicus]

Go to Advanced CPU Core Features and set everything to AUTO, if not set already.

 

[hucker]

Already set to auto.

And my idea of upgrading the bios from 3rd latest version to latest version didn't help either.

I guess this board just doesn't support this CPU fully. Ah well, it is a budget machine.

 

[Sardonicus]

Have you tried loading the defaults in the BIOS?

 

[hucker]

Yes.

 

[hucker]

I noticed that if I go into the overclocking options, that I can only set the CPU clock multiplier at up to 19. Before, when I've looked in a BIOS, the multiplier can be set at at least up to the multiplier required to get the turbo on. Could this board not support multipliers over 19?

 

[bobkn]

Gigabyte's CPU support list for the board:

GIGABYTE TECHNOLOGY Socket 1156 - Intel H55 - GA-P55-US3L (rev. 2.3)

The 760S isn't listed, which seems odd.

 

[GeneO]

Turbo is only used with high CPU load.

I have it fully loaded on 4 cores using BOINC.

Turbo will only boost one processor if the others are basically idle. It can't boost if all 4 are loaded or the processor would get too hot. T test if it is working you have to run a single processor and load only one processor.

 

[hucker]

Gigabyte's CPU support list for the board:

GIGABYTE TECHNOLOGY Socket 1156 - Intel H55 - GA-P55-US3L (rev. 2.3)

The 760S isn't listed, which seems odd.

That's because there is no such thing as a 760S according to Intel! I have a phantom CPU! Maybe this was a small batch made and they discontinued it?!?