2x 4GB 1333mhz, How much DRam is CPU-z supposed to tell?

[Mike Undercovah]

I've been curious why my ram usage has been so high, and I just did some investigation on Ram speeds and MHZ. And I've been reading that if you have 2 RAM sticks dual channeled of 1333 mhz each, that it practically doubles the MHZ, and I figured that CPU would show that aswell, but it only shows 665.5 of DRam frequency times 2?

Please help!

 

[barto]

DDR = Double Data Rate. 666.5 x 2 is 1333 MHz.

CPUZ isn't going to show you RAM usage. Task Manager will.

 

[Mike Undercovah]

Yea it does show 8175 in total, and 2800 of which is "in cache?".. But shouldnt I have mpore than 1333 mhz being shown when dual channelling 2 1333 sticks?

I tried to go in the bios, and put it to the highest possible settings 2.1k, But I got a error message and it put me back to 1333

 

[barto]

Hold on there bud. You're mixing up technical terms.

DDR3 is the type of RAM you have. The frequency that your RAM runs at is 1333 MHz. It's not recommended to increased the speed of the RAM unless you have kits that support overclocking.

So you have the speed at which the RAM runs but then you have the speed at which the RAM is accessed. That's where Dual Channel and Single Channel come in. Single channel occurs when there's only one stick of RAM. Dual Channel occurs when there's two sticks of RAM on the same channel. Right now the most board support only Single and Dual Channel. There are some boards (X99 chipset) that support Quad Channel.

Good read: http://www.hardwaresecrets.com/everything-you-need-to-know-about-the-dual-triple-and-quad-channel-memory-architectures/

Where are you seeing RAM usage in CPUZ? I might be missing something if there's newer version that shows usage because the version I have only shows total.

 

[Tradesman1]

Think you may be looking at each individual stick in CPU-Z which will only show the amount of DRAM that stick has, also dual channel does indeed 'double' the bandwidth (in theory) though in reality it only provides up to a 10 maybe 15% performance increase as you will never fully utilize all your DRAM to full potential

 

[Mike Undercovah]

Hold on there bud. You're mixing up technical terms.

DDR3 is the type of RAM you have. The frequency that your RAM runs at is 1333 MHz. It's not recommended to increased the speed of the RAM unless you have kits that support overclocking.

So you have the speed at which the RAM runs but then you have the speed at which the RAM is accessed. That's where Dual Channel and Single Channel come in. Single channel occurs when there's only one stick of RAM. Dual Channel occurs when there's two sticks of RAM on the same channel. Right now the most board support only Single and Dual Channel. There are some boards (X99 chipset) that support Quad Channel.

Good read: http://www.hardwaresecrets.com/everything-you-need-to-know-about-the-dual-triple-and-quad-channel-memory-architectures/

Where are you seeing RAM usage in CPUZ? I might be missing something if there's newer version that shows usage because the version I have only shows total.

Mm thanks for the info man, but, I wasnt planning to overclock it. I just figured if I'd set the MHZ to 2.1k in the BIOS that it would hopefully utilize the 1333 x 2 ram frequency :/

Im kind of sure that my 2 ram sticks are in dual channel though, A shop reputable shown assembled this setup like 2 years ago. But tbh I still fail to understand how much MHZ my setup actually is able to use. I want to know if my Ram is running at a proper speed with these 2 sticks. Because I been noticing problems my pc suddenly not being able to handle 10~ chrome clients like it did before, or play GTA smoothless like it did before

:<

 

[Mike Undercovah]

Btw, I just checked via Task Manager > Source Control. For the usage of my ram 😛 Here I made some screens of my CPU-z perhaps that indicates a problem? I do notice frequencies are off with both sticks lol

 

[barto]

Mm thanks for the info man, but, I wasnt planning to overclock it. I just figured if I'd set the MHZ to 2.1k in the BIOS that it would hopefully utilize the 1333 x 2 ram frequency :/

Im kind of sure that my 2 ram sticks are in dual channel though, A shop reputable shown assembled this setup like 2 years ago. But tbh I still fail to understand how much MHZ my setup actually is able to use. I want to know if my Ram is running at a proper speed with these 2 sticks. Because I been noticing problems my pc suddenly not being able to handle 10~ chrome clients like it did before, or play GTA smoothless like it did before

:<

I still think you're mixing up terms. The speed (frequency) of the RAM should never change. It should always be 1333 MHz. Let me put it to you like this. Think of a car. The frequency of the RAM would be how fast the motor runs (in RPMs). The usage or available space of the RAM would be the amount of cargo the car can hold. They really don't affect each other (ignore physics). If you bought 1333 MHz RAM and CPUz is reading 666.5, than everything is as it should be. If you notice the usage of the RAM increasing to where you're using the most of your 8GB, than you could be having an issue.

 

[barto]

Corrected.

 

[Tradesman1]

The sticks will show what they are actaully running at, here 1333, dual channel mode is operative of the memory controller itself that sees them as a 128bit device together rather than the individual 64 bit devices that each is