[SOLVED] Why is Task Manager showing only 1 core on my dual core processor ?

[Dragon534]

on cpu-z it shows 2 cores and 2 threads and shows 2 on msconfig too. But I was worried when AMD Radeon software was reporting it as 1 core.

screenshots:http://prnt.sc/1r348ou
http://prnt.sc/1r34c5l

 

[EyyMunchian]

I am unable to open the images but in task manager in the cpu section you can right click the cpu graph, select "change graph to" then select logical processors.

 

[Dragon534]

I am unable to open the images but in task manager in the cpu section you can right click the cpu graph, select "change graph to" then select logical processors.

But that doesn't solve the problem of Amd Radeon Software saying that it only has 1 core

 

[Dragon534]

and i also mean that it says that I only have 1 physical core

 

[EyyMunchian]

and i also mean that it says that I only have 1 physical core

what cpu do you have?

 

[Dragon534]

what cpu do you have?

I have an AMD A6 7400k cpu

 

[EyyMunchian]

I have an AMD A6 7400k cpu

Try updating your cpu drivers, do you know if your system has turned 1 core off? Check your bios and make sure all cores are enabled

 

[Dragon534]

Try updating your cpu drivers, do you know if your system has turned 1 core off? Check your bios and make sure all cores are enabled

i did go to the bios and turned downcoring to auto other option was single core. And how do you update cpu drivers ?? also I'm not sure if 1 core is off

 

[EyyMunchian]

i did go to the bios and turned downcoring to auto other option was single core. And how do you update cpu drivers ?? also I'm not sure if 1 core is off

AMD software should have a module to update your drivers. A6-7400K with Radeon™ R5 Series Previous Drivers | AMD The link is the latest version of drivers for your cpu

 

[Dragon534]

AMD software should have a module to update your drivers. A6-7400K with Radeon™ R5 Series Previous Drivers | AMD The link is the latest version of drivers for your cpu

ohh yes i have already updated the driverss

 

[Dragon534]

And even the chipset drivers

 

[Nemesia]

Did you try window key + r and type in msconfig. Second tab "advanced options" and make sure the CPU count box is not checked. If it is uncheck it and apply and restart.

 

[Dragon534]

Did you try window key + r and type in msconfig. Second tab "advanced options" and make sure the CPU count box is not checked. If it is uncheck it and apply and restart.

yes it is no longer ticked

 

[Dragon534]

also the CPU has 2 cores and 2 threads so it should be 2 cores and 2 logical processors but it is only 1 core with 2 logical processors.

 

[froggx]

It's all semantics. AMD got kind of "creative" when they threw together the bulldozer microarchitecture. These things are kind of a weird hybrid crapshoot, but essentially you have 1 "module" that is addressed as 2 threads. This "module" has 2 cores for the purpose of integer calculations, so if both threads are doing ints each thread has a dedicated core to do so with. However, each module only has a single floating point unit, causing it perform like a single core, 2 thread SMT processor when both threads are running floats.

Some say 1 module = 1 core since these modules aren't true dual core items due to the shared FPU. Others will say 1 module = 2 cores since each module has 2 integer cores. Technically speaking, neither is incorrect. Either way, 1 module = 2 threads, which is clustered multithreading (CMT) rather than SMT which is used to assign 2 threads to a single core.
Bonus Reading.

 

[Dragon534]

thank you all it looks like my CPU only has 1 module thats why it is id as 1 core