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[TR] Exploring the impact of memory speed on Sandy Bridge performance - Page 7

post #61 of 77
I think I made a solid choice with my 1x3gb ram kit.. too bad I cant get any more of it as it is dis-continued. I run 1800mhz 8-8-8-22 2T (I know it will go faster) but I have been too busy/lazy to bench/stability test it. I can play any game I throw at this computer at insane levels and I am using a video card that is over 3 years OLD!!!

Please correct me if this is wrong but I have always thought of ram like this:
2gb DDR400 = 1gb DDR800 (throughput)
6gb DDR1000 = 3gb DDR2000 (throughput)
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post #62 of 77
Thread Starter 
Quote:
Originally Posted by Killam0n View Post
Please correct me if this is wrong but I have always thought of ram like this:
2gb DDR400 = 1gb DDR800 (throughput)
6gb DDR1000 = 3gb DDR2000 (throughput)
No that is not how it works for system memory. The size of memory does not affects its speed. For example, 2 GB DDR3 1600 MHz CL8 would have the same throughput as 4 GB DDR3 1600 MHz CL8.
post #63 of 77
Quote:
Originally Posted by Riou View Post
No that is not how it works for system memory. The size of memory does not affects its speed. For example, 2 GB DDR3 1600 MHz CL8 would have the same throughput as 4 GB DDR3 1600 MHz CL8.
so then faster is better than quantity.. no?
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post #64 of 77
Quote:
Originally Posted by Killam0n View Post
Please correct me if this is wrong but I have always thought of ram like this:
2gb DDR400 = 1gb DDR800 (throughput)
6gb DDR1000 = 3gb DDR2000 (throughput)
Not exactly.

If you notice the "PC" rating of sticks, that gives you the throughput.
EX> PC3200 (DDR 400) = 3200 MB/sec
Dual channel doubles this to 6400 MB/sec theoretical maximum.

Quantity really doesn't have anything to do with it.
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post #65 of 77
I agree with most people here, the best prize/perfomance is DDR3 1600MHz CL9.
Too bad I only found the G.Skill Ripjaws 1333Mhz CL9 (2x2GB), but according to this and other tests the difference should be very little with the Ripjaws 1600MHz CL9 kit (2x2GB), at least for gaming.
Edited by link_90 - 2/11/11 at 3:08am
post #66 of 77
I remember when 1600 7-7-7 was the standard stick. Oh how times have changed.
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post #67 of 77
Quote:
Originally Posted by MushkinNick View Post
Well, we could start making speakers like every other company in the world!
What you really need to do is go over to marketing or whoever can make this decision, and push them to release the beautiful white heatspreader DDR3 that OC3D had in it's Christmas/New Years giveaway to the general public.

I'll drop Corsair like a rock if you make it happen. (and they can keep their crummy speakers)

Bassplayer: I don't think 1600 7-7-7 has ever been standard. Especially since Nehalem/Deneb didn't support 1600 out of the box.
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post #68 of 77
Quote:
Originally Posted by DuckieHo View Post
Bloatware that sucks out the CPU? Most CPUs are not loaded 100% constantly.

Do you mean poorly or un-optimized applications?
Sure -all of it. There is some bloatware that is pretty hard on the CPU, but then, software with memory leaks or other defects is harsh too. I had a system where even Firefox wouldn't behave, and it kept hitting the swap everytime two tabs were opened - and that used 90-95% of the CPU for chunks of time, even though there was entirely adequate memory available. But there is lots more examples of unoptimal or bloated software, like Vuze, or most of the stuff Adobe cranks out...
post #69 of 77
Quote:
Originally Posted by SgtSpike View Post
But what does it gain you if you go from 8ns to 6ns? What real-world benefit do you see?
Quote:
Originally Posted by Eagle1337 View Post
None afaik.
There is plenty of real world benefit in applications such as BOINC, Folding@Home, video and audio editing, rendering, and encoding.

Games typically see no benefit since they are almost always limited by the graphics card and nothing else.

Most CPU's and chipsets simply can't even take advantage of high bandwidth memory because they are just too slow and limiting. My memory gets limited until my Northbridge/IOC is over 3800MHz, then it levels off providing no further benefit. My bandwidth increases linearly well into the 4GHz range of my CPU, showing that even under 60% overclock the CPU still can't utilize the full performance of my RAM.
post #70 of 77
for what it's worth, faster ram makes a nice difference if you're folding

but gaming? probably not worth it
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