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Ram at 1600Mhz higher V Core than at 1333

Ryuuji
Level 8
Hello,

I wanted to change my Ram speed from 1333 to 1600Mhz and start OC'en. But somehow the higher Ram Speed results in getting a higher VCore. At 1333 I have a VCore off 1.088V and with 1600 around 1.150ishV. I set the Timings via XMP and manually but both times I get a higher VCore.

What do I need to do or Change in the UEFi so that the VCore won't change?

CPU: i7 4770K@Stock on Noctua NH-D14
Mainboard: Maximus VI Extreme
Ram: Corsair Vengeance Lp

Oh and why is the Blck with the 1302 Bios at 99.8 and not at 100 like with the previous ones?

Ryuuji
4,711 Views
10 REPLIES 10

Ryuuji
Level 8
OK But 1600 Is Haswell's Standard Frequency or not?

When I want to OC my CPU is it then better to run the Ram at 1333 to have more V Core available than at 1600?

Chino
Level 15

Ryuuji
Level 8
So I just have to take it? Is there no possible way to get the RAM running at 1600mhz with the Core Voltage of 1333mhz?

Praz
Level 13
If you are setting the CPU voltage manually it should not change with a change of ram speed.

Ryuuji
Level 8
But than the voltage is always the same ? Haswell can clock down to 800 and the voltage is than only 0,4V or something. Would this still work if I would sett the voltage manually?

COLDSTATIC
Level 8
Here is what I would do. Whatever your rams multiplayer lower it to that setting. So if you have 2400 men it runs with 100 I would use 1600 to OC. If you have 2133 it uses 133 I would use 1333 when I OC.

I would guess your getting higher volt b/c of some weird relationship to vcore and the IMC( integrated memory controller). My reasoning is that the sys agent volts do not scale with men speed but instead like certain Volta at certain speeda
4770k | Asus Hero | G.Skill Trident 2400 32gb | Samsung 840 pro 256gb
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Ryuuji
Level 8
Thank you COLDSTATIC.
I was also thinking something along the lines with the IMC, Blck and all the other integrated things Intel added into the CPU. What do you mean with the Ram multiplayer? Do you mean the frequency that CPU-Z shows and that you multiply by 2? And which frequency would you choose with 1600Ram?
In your Sic it says that you have 2400 Ram on what frequency do you let it run? 2400 or 1600 like you wrote in your post?

Does someone else knows what i cloud additional do to solve this?

COLDSTATIC
Level 8
Right above the men clock speed there's is an option. Auto or 100:133. That's what I am referring to. Its the mem decider I believe. Its there to give you many more men speed options from the men multiplier. The 100 would be the same as fsb 100 and 133 would be for 133 fsb.

The reason I said 1333 or 1600 is b/c they are the lowest in each category. Yes I know there are lower menM multipliers but I am fineckey that way.

When you start OC set me to low...find core OC. Then cache oc if you do that too. Then OC men...doing it this way eliminates the men for problems most of the time.
4770k | Asus Hero | G.Skill Trident 2400 32gb | Samsung 840 pro 256gb
NZXT Kraken x60 | Asus GTX780 Direct CU ii OC | Razer tiamat 7.1
Razer Imperator | Razer Nostromo | Antec High current pro 850
Thermaltake Xaser Vi | Windows 8.1 64bit