Ram Voltage & overclocking

Call4ljw SG

Hi all... 2 questions.

(1)How much does increasing voltage help in RAM overclocking?(DDR3)

(2)Can a graphics' card GPU be removed...and changed?(Same/Different type)

Rgds.

MyPillowTalks SG

Voltage = Current x Resistance

Bringing up the clock speed will mean faster frequency, meaning more current(should be)

In order for the ram to be able to maintain the current, you may need more voltage, so you can say bringing up the voltage will help, same reason why when overclocking the CPU, you need to bring up the voltage.

(2) Well, theorily speaking, as long as the processor's pin configuration is the same, you can change, think like using a 775 processor on diff mobo.

But i dont think that it is possible for graphics card, as i never design grahpics card before

Raraken SG

1) Increasing voltage helps. But beware, because you should NOT EXCEED 1.65V on Intel i3/i5/i7 CPUs. Some people have had their i7 chips destroyed by a high VDimm within 1 day. For AMD chips, nah. AMD chips can tolerate about 2V, because they are designed with DDR2 in mind as well, and DDR2 takes a higher voltage. Bt if you screw up your RAM by overvolting it, well, your warranty GG liao.

2) Same GPU? Yes. DIfferent GPU? Depends. If they are based on the same silicon (HD5750 and HD5770, HD4830 and HD4850/70), very likely yes due to the same pinouts on the chip.. Just remember, the BIOS needs to be changed as well. If the BIOS is for the wrong GPU, then you bricked it.

Call4ljw SG

Which AMD chip do you mean?

Raraken SG

Which AMD chip do you mean?

Any. As long as they have the same silicon, and thus same pinouts, they can be swapped, providing you do the necessary changes.

RV770 chips can be swapped with each other (4800 series, except 4890)

Juniper-class chips can be swapped with each other.

GTX470 and GTX480 chips can be swapped.

Call4ljw SG

Any. As long as they have the same silicon, and thus same pinouts, they can be swapped, providing you do the necessary changes.

RV770 chips can be swapped with each other (4800 series, except 4890)

Juniper-class chips can be swapped with each other.

GTX470 and GTX480 chips can be swapped.

I mean part 1) AMD processor chips

Raraken SG

I mean part 1) AMD processor chips

AM3 chips with support for both DDR2 and DDR3. Any will do. If your RAM can tahan the voltage, so can the CPU.

Call4ljw SG

I cant find any useful data on the AMD chips.

I didn't actually ask about the voltage, but anyway heres my RAM.

1646Mhz 8-8-8 timings 56.6ns latency

Raraken SG

I would suggest resizing your pictures down to 1024x768 or something, because I, nor anyone else on this forum, like having pictures blown up to mega-preposterous proportions.

Anyway, BACK DOWN ON YOUR VOLTAGE. Keep to a maximum of 1.65V, because chips have been killed by high VDimm. Lower your DRAM Bus Voltage.

Also, those timings aren't that good. 8-8-8-56? Seriously? Not worth the danger, mate.

Call4ljw SG

My RAM is quite lousy, this is the highest i can go.

PC3-10600/1333 team elite 3x1GB

I'm more worried about my RAM getting destroyed lol, since it REALLY is very lousy.

Raraken SG

My RAM is quite lousy, this is the highest i can go.

PC3-10600/1333 team elite 3x1GB

I'm more worried about my RAM getting destroyed lol, since it REALLY is very lousy.

Look, 1333MHz is enough for triple-channel memory. Don't be an ass and say that's not enough. Lets do the math.

Yours:

10600MB/s per stick x 3 sticks = 31800MB/s total bandwidth

How about mine?

12800MB/s per stick x 2 sticks = 25600MB/s total bandwidth

Your RAM has less speed than my RAM, but higher total bandwidth which is important.

Your latency at 1333MHz would likely be 7-7-7. My latency is 7-7-7 as well. So actually, you have no bandwidth issues.

Call4ljw SG

I didnt say the bandwidth not enough.

My RAM is super lousy compared with others.

http://forums.hardwarezone.com.sg/showthread.php?t=2341303

My RAM is already at 1.74 voltage.

This timings at 1.5V can hit le...up voltage helps with decreasing latency only.

Raraken SG

I didnt say the bandwidth not enough.

My RAM is super lousy compared with others.

http://forums.hardwarezone.com.sg/showthread.php?t=2341303

My RAM is already at 1.74 voltage.

This timings at 1.5V can hit le...up voltage helps with decreasing latency only.

RAM is a hit-and-miss. If you actually wanted good OC performance, get yourself some Crucial sticks. They overclock like crazy, even without heatspreaders.

As long as they can reach their rated speeds, why complain?

Call4ljw SG

RAM is a hit-and-miss. If you actually wanted good OC performance, get yourself some Crucial sticks. They overclock like crazy, even without heatspreaders.

As long as they can reach their rated speeds, why complain?

It can reach rated speeds.

But it can't hit the rate which i want.

Just because of this RAM,my base clock is stuck at 206.

Stuck at 4.32Ghz when i wanted 4.4Ghz.

Raraken SG

It can reach rated speeds.

But it can't hit the rate which i want.

Just because of this RAM,my base clock is stuck at 206.

Stuck at 4.32Ghz when i wanted 4.4Ghz.

Then why settle for value RAM? Why not go for the Xtreem?

Raraken SG

It can reach rated speeds.

But it can't hit the rate which i want.

Just because of this RAM,my base clock is stuck at 206.

Stuck at 4.32Ghz when i wanted 4.4Ghz.

Anyway, are you even sure your CPU is capable of reaching 4.4GHz?

And is your memory divider even set to the lowest?

Call4ljw SG

Then why settle for value RAM? Why not go for the Xtreem?

I already bought it...too late. =(

want to upgrade but don't feel its worthy to.

Call4ljw SG

Anyway, are you even sure your CPU is capable of reaching 4.4GHz?

And is your memory divider even set to the lowest?

Ya...sure.

But at 4.4, i get unstable RAM. I use Memtest.

What for would i set it to the lowest?

People with the same RAM chip can hit 1800Mhz and with better timings.

Raraken SG

Ya...sure.

But at 4.4, i get unstable RAM. I use Memtest.

What for would i set it to the lowest?

People with the same RAM chip can hit 1800Mhz and with better timings.

Set memory to the lowest to make sure your CPU can actually reach that speed. Unstable Memtest can be due to the IMC not being able to operate at that speed.

Also, it can be your board. The board heavily influences the max speed and lowest timings of the RAM in question. Compare the boards other people used and your own board. Are they of the same calibre?

Just because other people can reach that speed doesn't mean yours can. It's the same with overclocking the CPU. Some CPUs can go all the way to 4.5+GHz, some can't even get to 3.6GHz.