Question Why my laptop shows 1600mhz speed but my pc 800mhz?

[mmrz1360]

I have a HP laptop and installed two ddr3 4gb 1600 ram. in task manager it shows the speed 1600mhz. I did the same with my pc but it shows the speed 800mhz! why?
my pc: mobo msi 970a-g43, cpu fx-6300, 2 ddr3 apacer 1600 4gb.
thank you in advance

 

[Phaaze88]

DDR(Dual Data Rate) 800mhz*2 =1600mhz
You can also check this via Cpu-Z: https://www.cpuid.com/ (the memory and spd tabs)

 

[mmrz1360]

DDR(Dual Data Rate) 800mhz*2 =1600mhz
You can also check this via Cpu-Z: https://www.cpuid.com/ (the memory and spd tabs)

thank you for the answer. but I know what you mean. my question is why the task manager of my laptop shows 1600mhz of speed but the task manager of my pc shows 800mhz of speed?

 

[CountMike]

thank you for the answer. but I know what you mean. my question is why the task manager of my laptop shows 1600mhz of speed but the task manager of my pc shows 800mhz of speed?

Because Task manager is often wrong and displays only base speed.

 

[mmrz1360]

Because Task manager is often wrong and displays only base speed.

Well... should i do something with my DIMM slots on my pc or configuration in bios? I've tested all slots on my pc but it didn't help! why my laptop shows the correct 1600mhz?

 

[CountMike]

Well... should i do something with my DIMM slots on my pc or configuration in bios? I've tested all slots on my pc but it didn't help! why my laptop shows the correct 1600mhz?

Nothing you can do, it's windows "thing". Double check with programs like CPU-Z, Aida, HWinfo etc and don't forget to multiply by two. There's no way DDR3 would work at 800MHz, that's top speed for DDR2.

 

[Irisena]

DDR3 JEDEC standard speed is 1333mhz. so no way it can go lower than that i think. it should work 1600mhz on reality.

 

[kerberos_20]

windows will report what your bios tells it, theres nothing you can do about it if your bios shows reall clock or "fake" wannabe clock
btw ddr3 800mhz exists (pc3 6400)

 

[mmrz1360]

windows will report what your bios tells it, theres nothing you can do about it if your bios shows reall clock or "fake" wannabe clock
btw ddr3 800mhz exists (pc3 6400)

so when task manager on my laptop says the speed is 1600mhz it is fake? and when task manager on my pc says the speed is 800mhz it is real? I installed the same windows on my pc and laptop. I bought 2 ddr3 4gb 1600 for my pc and 2 ddr3 4gb 1600 for my laptop. I can't understand why pc says speed: 800mhz but laptop says speed: 1600mhz!! It confused me!!

 

[Irisena]

alright, just do this: download CPU-Z, open SPD tab, and look "max bandwidth" tell us what it is (PC3-12800 or 14200 or something). and what mhz under the ( ) is. it should tell you what kind of RAM you're running. also, damn I didn't know DDR3 800mhz do exist. never saw one in my entire life.

 

[CountMike]

You are worrying for nothing, don't worry, be happy all is running like it should.

 

[mmrz1360]

alright, just do this: download CPU-Z, open SPD tab, and look "max bandwidth" tell us what it is (PC3-12800 or 14200 or something). and what mhz under the ( ) is. it should tell you what kind of RAM you're running. also, damn I didn't know DDR3 800mhz do exist. never saw one in my entire life.

well I did what you said dear. it is written Max Bandwidth: PC-3 12800 (800 MHz) for both rams. Slot 2 and 4

 

[Irisena]

PC-3 12800

PC3 12800 means it's running 1600mhz. good for you then. 1600mhz is your answer.

 

[mmrz1360]

PC3 12800 means it's running 1600mhz. good for you then. 1600mhz is your answer.

Oh!Thank you so much dear