Bad Winnie Memory Controller?

[khurios2000]

Im not sure my CPU has bad rotten memory controller
It can boot at 305mhz at 2.5-3-3-6,
memtest 1.51+ recoqnize it at 305mhz
but cpuz memory tab read as 288mhz, cpu/dram: CPU/9

305mhz

288mhz

what u guys think?

edit: 305mhz pic corrected

 

[Shimmishim]

are you using a half mult?

 

[khurios2000]

im using 8.5 X,
is that the problem?

 

[Shimmishim]

it's not a problem...

 

[Shimmishim]

it's just how the A64/mobo calculates the mem frequency using 8.5 or any half mult that causes your mem to run slower than it actually does

 

[Shimmishim]

the way it's calculated...

8.5 x 305 = 2592.5

mult gets rounded up to 9

2592.5 / 9 = 288

that's why cpu-z shows 288

hope that makes sense

 

[Jeff7181]

Originally posted by: Shimmishim
the way it's calculated...

8.5 x 305 = 2592.5

mult gets rounded up to 9

2592.5 / 9 = 288

that's why cpu-z shows 288

hope that makes sense

In other words, half multipliers are available for CPU multipliers... but the memory speed is set by dividing the CPU core clock speed by a number, and those numbers can only be whole numbers.

 

[khurios2000]

So when im using half multi, the divider is on?

 

[Shimmishim]

it's a pseudo divider in a sense because it rounds the mult up

so 8.5 goes up to 9... 9.5 goes up to 10 etc...

so yeah the mem frequency gets divided

 

[Shimmishim]

Originally posted by: Jeff7181

Originally posted by: Shimmishim
the way it's calculated...

8.5 x 305 = 2592.5

mult gets rounded up to 9

2592.5 / 9 = 288

that's why cpu-z shows 288

hope that makes sense

In other words, half multipliers are available for CPU multipliers... but the memory speed is set by dividing the CPU core clock speed by a number, and those numbers can only be whole numbers.

yup yup adn it always rounds up

 

[khurios2000]

Originally posted by: Shimmishim

Originally posted by: Jeff7181

Originally posted by: Shimmishim
the way it's calculated...

8.5 x 305 = 2592.5

mult gets rounded up to 9

2592.5 / 9 = 288

that's why cpu-z shows 288

hope that makes sense

In other words, half multipliers are available for CPU multipliers... but the memory speed is set by dividing the CPU core clock speed by a number, and those numbers can only be whole numbers.

yup yup adn it always rounds up

Thanks guys,
appreciate it