[SOLVED] Unlocking 2 cores to 4 cores

[JOLIX]

I have AMD A10 7800 and my motherboard is BIOSTAR HI-FI A70U3P. Does anyone know how to unlock 4 cores? Cuz in Heaven Benchmark and Task manager my cores are only 2 and when I check my CPU-Z my cores are 4. I don't know what is the real cores of my cpu right now.

 

[Mr.Spock]

May want to check your bios version and whether cores were disabled in ACC. Also check boot options settings in msconfig.
It could be the bios or O/S isn't proper config'ed

P.S. definitely 4-cores, might want to check in device mgr and check what's showing there

 

[JOLIX]

May want to check your bios version and whether cores were disabled in ACC. Also check boot options settings in msconfig.
It could be the bios or O/S isn't proper config'ed

P.S. definitely 4-cores, might want to check in device mgr and check what's showing there

Thanks! I will check it now.

 

[JOLIX]

May want to check your bios version and whether cores were disabled in ACC. Also check boot options settings in msconfig.
It could be the bios or O/S isn't proper config'ed

P.S. definitely 4-cores, might want to check in device mgr and check what's showing there

In the device manager, it's 4 and in MSConfig boot advance options I check and change the number of processors 1 to 4 and I check also the maximum memory.
-ps, I don't know whats the meaning of ACC you mention here hehe.

 

[bignastyid]

That cpu has 2 modules that can process 2 threads each(so a total of 4 threads). Many programs will see this as 2 cores 4 threads.
Technically it's not a true 4 core as the cores in each module have to share a FPU. AMD lost a class action lawsuit over this issue on their FX lineup.

 

[Mr.Spock]

AMD's own datasheet disagrees:
Model:A10-7800 with Radeon™ R7 Series

Family:AMD A-Series Processors

Line:AMD A10-Series APU for Desktops

Platform:Boxed Processor

OPN Tray:AD7800YBI44JA

OPN PIB:AD7800YBJABOX

# of CPU Cores:4

# of Threads:4

# of GPU Cores:8

That cpu has 2 modules that can process 2 threads each(so a total of 4 threads). Many programs will see this as 2 cores 4 threads.
Technically it's not a true 4 core as the cores in each module have to share a FPU. AMD lost a class action lawsuit over this issue on their FX lineup.

 

[Mr.Spock]

in Bios, many AMD AM3 and FM2 motherboards have an ACC tab.
it's been used to override the number of cores - usually to unlock a disabled core in a Phenom X3 or similar - but it can also be used to disable cores, essentially downgrade a processor to fewer cores to suit a motherboard limitation or just for power savings.

sometimes that setting gets corrupted and it doesn't hurt to check

In the device manager, it's 4 and in MSConfig boot advance options I check and change the number of processors 1 to 4 and I check also the maximum memory.
-ps, I don't know whats the meaning of ACC you mention here hehe.