Corsair Vengeance 2x8 CL14 3000 MHz RAM & z370 tuf pro overclocking

[emrekskn3]

I'm planning on buying Corsair Vengeance 2x8 CL14 3000 MHz RAM, instead of my 2.4 mhz gskill 16 gb rams. But the question is will I be able to run rams at 3.5 mhz using xmp option ? Is it avaliable for z370 tuf pro ? And is it worth buying ?

 

[Barty1884]

If the modules are marketed as "3000MHz", then that's going to be their highest XMP profile.

I assume you're asking if you can run at 3500MHz? Which is not really a standard speed. 3200-3400MHz may well be possible, but that's going to be with manual tuning. The XMP profile won't go higher than 3000MHz.

 

[emrekskn3]

If the modules are marketed as "3000MHz", then that's going to be their highest XMP profile.

I assume you're asking if you can run at 3500MHz? Which is not really a standard speed. 3200-3400MHz may well be possible, but that's going to be with manual tuning. The XMP profile won't go higher than 3000MHz.

The Corsair Vengeance 2x8 CL14 3000 MHz RAM is marked with lpx option, that's what got me confused. Aren't lpx rams are pushable to higher limits ?

 

[Barty1884]

Not necessarily. There's nothing within the "LPX" designation re: speeds etc. LPX is low-profile.

In theory, low-profile memory would likely have less chance of higher clocks (although in practice, the low-profile nature doesn't impact anything).

 

[emrekskn3]

Not necessarily. There's nothing within the "LPX" designation re: speeds etc. LPX is low-profile.

In theory, low-profile memory would likely have less chance of higher clocks (although in practice, the low-profile nature doesn't impact anything).

This screenshot is from the seller with z270 and rams I'm willing to buy. He's using rams at 3.5 mhz with z270 xmp option. What's your opinion on this ? How does he use them at 3.5 mhz ?
Edit :https://cdn.discordapp.com/attachments/314103891790921730/459440841304571904/unknown.png

 

[Barty1884]

No, they're not..... I don't think

The "MEM" is green and shows both a speed and usage (2714MB ie 2.7GB), as is the "GPU" utilization. That's GPU memory speed.

 

[TJ Hooker]

He must have changed his BCLK speed. Most people just change the memory multiplier for OCing memory [strike](memory speed = BLCK x multiplier)[/strike].

Edit: memory speed = BCLK x FSB: DRAM ratio x multiplier

Edit2: Nvm, that's VRAM speed, not system RAM speed.

 

[Barty1884]

Is that not the memory speed for the GPU TJ?

 

[TJ Hooker]

[strike]The way I'm reading that is that everything for the GPU is in the same row. So, from left to right, the top line is GPU temp, utilization, fan speed, and clock speed. The next row is RAM speed, and amount used. etc.[/strike]

Edit: derp

 

[emrekskn3]

Thanks to both of you, I've just learned ram is 2.1mhz by default. Xmp allows to use at 3000 mhz but he overclocked it to 3.5mhz. So you were right.

 

[Barty1884]

The way I'm reading that is that everything for the GPU is in the same row. So, from left to right, the top line is GPU temp, utilization, fan speed, and clock speed. The next row is RAM speed, and amount used. etc.

I'm not too familiar with AB, but I've never seen screenshots with AB showing only "total" RAM.... only utilization (or utilization and total available)

So, to me, there's 8GB of RAM being used (at the bottom of the OSD) and any subsequent notes (speed etc) would need to be enabled and would show below that, no?

Still look to me like the top two lines are all GPU-related. But like I said, not too, too familiar with AB.

 

[TJ Hooker]

Oh, yes you're right, it looks like the 3500 MHz is VRAM speed.

 

[Deleted member 217926]

The only part of that screenshot pertaining to system memory is the 8GB part.

The top is VRAM. GDDR5 is actually quad pumped as opposed to double pumped like desktop DDR. Regular DDR ( double data rate ) transmits information on the rising and falling edges of the clock cycle. GDDR ( graphics double data rate ) transmits 2 pieces of information on both the rising and falling edges of each clock cycle for a total of 4 per cycle.

Here's where it gets confusing. 😛 Some programs continue to read GDDR clocks at the base which in that case is 1750mhz. Some double it since it's sending 2 pieces of info per cycle so that's what you're seeing in that screen shot at 3500mhz. Some read the effective speed which in this case is 7000mhz.

So, TL;DR. That's a screen shot of a likely GTX 970, a CPU that's badly overheating and the computer has 8GB of RAM. Anything else he's either lying or clueless.

The Corsair Vengeance 2x8 CL14 3000 MHz RAM is marked with lpx option, that's what got me confused. Aren't lpx rams are pushable to higher limits ?

LPX means low profile. That's all.