Sign in with
Sign up | Sign in
Your question

Performance difference between 4gb*2 or 8gb*1

Last response: in Memory
Share
May 25, 2012 7:26:14 PM

I know it might sound stupid.

will there be a performance difference between either, obviously you would get less hear with 8gb*1

More about : performance difference 4gb 8gb

May 25, 2012 7:30:42 PM

Well it depends on whether the system architecture uses dual-channel memory. In a dual-channel platform, the 4gb x 2 would outperform the 8gb x 1. Mainstream platforms today use dual-channel memory so 4gb x 2 should be better.
m
0
l
May 25, 2012 7:45:32 PM

Its a 3930k which has a 4x memory controller i believe
m
0
l
Related resources
a b } Memory
May 25, 2012 8:49:30 PM

Ummm....your motherboard is quad channel, which means you need 4 sticks, not 2 or 1.

Did you even bother to read the manual?
m
0
l
May 25, 2012 9:30:53 PM

+1 to geekapproved.

To answer your thread, a dual-channel (2 sticks of memory) has better performance than a single channel (1 stick). And of course a quad-channel (4 sticks) would have better performance than either a dual or single-channel kit.
m
0
l
a b } Memory
May 25, 2012 9:39:38 PM

Well you don't strictly need 4 sticks, but it'll improve performance.

Basically you'll get more throughput the more sticks you use. 4 > 3 > 2 > 1.
m
0
l
a b } Memory
May 26, 2012 3:11:30 PM

To buy a s2011 platform and a s2011 cpu and run single or dual channel would be absolutely moronic.

That would be like buying a Buggatti Veyron and putting wood tires on it.
m
0
l
May 26, 2012 4:06:54 PM

geekapproved said:
Ummm....your motherboard is quad channel, which means you need 4 sticks, not 2 or 1.

Did you even bother to read the manual?


I have a 3930 and it takes 1, 2 or 4 sticks. That's the kind of useful information that you can get from reading the manual and not listening to ignorant opinion. That's the Asus P9X79 Pro motherboard. Your motherboard may differ but I would hope not.

As for performance, mine came with 4 x 2GB sticks (HyperX Genesis) @ 1333MHz with an XMP profile @ 1600MHz. I tested it with 4GB and 8GB at both speeds. The differences were small, 4 seconds in a 13 minutes test for 2 sticks versus 4 at the higher speed. The tests were hand-timed but that doesn't matter too much given that I was only looking to see if there were major differences. I wasn't expecting any given that time after time and in system after system, reviewers' memory performance tests show that memory is not the most crucial area for optimisation (eg. get a bigger SSD rather than going for faster memory). Worrying about memory is for the true enthusiast who has the money to throw at all areas of the system.

4 x 2GB @ 1600 MHz .... 761 secs
2 x 2GB @ 1600 MHz .... 765 secs .... +4
2 x 2GB @ 1333 MHz .... 771 secs ... +10
4 x 2GB @ 1333 MHz .... 785 secs ... +24

That said, I was testing with my actual work (numerical analysis) rather than a benchmark program and it may be that the generous cache in the 3930 takes more of the load off the memory system than your application will. However, as you can see, any analogy of fast cars with wooden tyres is someone talking simplistically from his imagination - what he thinks ought to be the case, but isn't.
m
0
l
May 26, 2012 5:11:33 PM

You can use 2 sticks on dual channel which will be sligtly fatser but 1 stick is better for future upgrades
m
0
l
a b } Memory
May 26, 2012 6:47:35 PM

Robi_g said:
You can use 2 sticks on dual channel which will be sligtly fatser but 1 stick is better for future upgrades


You could drive on 4 bald tires too......but it would be completely wrong.
m
0
l
a b } Memory
May 26, 2012 7:46:28 PM

All right, kids. Play nice or I will kick everyone out of the sandbox.

Seriously, let's stop the personal atttacks.

John
m
0
l
a b } Memory
May 26, 2012 10:27:03 PM

I mean cmon, telling someone they should buy 1 stick of memory for a quad channel motherboard is......well...you can figure it out for yourself.
m
0
l
May 28, 2012 1:54:01 AM

geekapproved said:
Ignorant opinion? It's the right way, if that's ignorant, then your a moron.


Lol. Okay, what's the difference between a moron and an ignorant?

One has the processor in question, has tested the memory configurations and found minimal difference (ie. has given information that the OP can use).

The other is making comparisons between a car that will work and a car that won't (ie. has expressed pure hyperbole).

Well...you can figure it out for yourself. :D 
m
0
l
!