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I wanna upgrade to faster memory for my Thuban 1055T + 990FXA UD5 !!!

post #1 of 8
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Hi OC.net network !
I presently have ADATA 2x2GB 1333 9-9-9-24-2T 1.5v and have been using since 2010. It is perfect stable even at 1526Mhz 7-9-7-23-1T at 1.65v. But these sticks give errors at 1600Mhz. I really have a great feeling of buying new high frequency low latency modules as I've felt tighter timing with high frequency really gives performance boost (Gaming like GTA IV, BF3, compression test, video encoding, windows explorer seems much faster and responsive). There is one more cause of wanting of 1866 - 2133 because I have seen my motherboard doesn't have any problem pushing base clock up to 322. I have seen people running at 2300Mhz with AMD FX with this motherboard.

I know thuban doesn't support higher memory than AMD FX CPUs or even close to it. But I really like 2133Mhz, even if I am unable to make them stable at higher frequency, at least I can run it at 1866 CL7 or 1700 CL6 by downclocking/tightening timing.

Also my current ADATA 1333 CL9 is great at tightening timing, upto 1333 6-7-6-19. I really want to buy this type of chip with higher frequency. I have checked Gskill sniper 1600 C9 8GBSR, 1600 CL9 XMS2 of my friends. They all failed while tweaking timing with my motherboard.

As we know there are many kits in market having high frequency. But they all look compatible to Intel CPUs only. I am unable to judge among those kits because I am really afraid of compatibility with Thuban CPUs in terms of overclcoking.

Any type of help would be appreciated smile.gif
    
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post #2 of 8
You should know that in AMD
Lower Timings > higher speed
IMO the best ram for AMD is the GSkill Eco 1600 CL7 1.35v
They can do 1600 CL6 @ ~1.50v
And don't forget to overclock the NB-CPU ( memory controller, not the actual NB) as high as you can.
You wouldn't notice any gain going higher speed unless you can get tighter timings.
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post #3 of 8
OP-

You should buy whatever makes you happy.

It's worth noting that in spite of the hate spewed by some folks in these forums... Tom's Hardware, AnandTech and X-Bit Labs all tested higher frequency and lower latency DDR3 RAM and found that above ~1333 MHz. there was no "significant" or "insignificant" system gains in REAL APPLICATIONS. The synthetic benches do show small gains but they do not tend to transfer to real apps. because the synthetic benches are not 100% representative of actual PC operation.

Again - Buy what makes you happy. The test data is available at the websites listed above for those who want to learn and understand why DDR3 RAM @ 1333+ MHz. is not a system bottleneck and why as frequency increases, one clock cycle decreases, thus potential gains even in synthetic benches results in diminishing returns as the frequency increases.

Instead of arguing and spewing hate, I suggest folks go to the above websites and read the extensive reviews on both AMD and Intel DDR3 RAM tests - to learn what these three independent PC industry sources determined in their testing. There is no conspiracy, just reality in their testing which has been duplicated by many OCN members. thumb.gif

BTW, there are plenty of name brand high frequency rated RAM kits for AMD systems unless you are limited to local sources.
Edited by AMD4ME - 3/31/12 at 1:52pm
post #4 of 8

You have your Phenom II x6 at a really high 4Ghz and a really lucky RAM kit (normally such settings and capability should not be expected from a 1333 CL9 kit due to lack of binning expectations).  You are probably doing great where you are and upgrades that enable both faster CPU and memory will probably provide insignificant gains versus, say, an upgrade to the next-gen "Piledriver" FX processor on your existing platform, which the money you have now would probably be better used for.

post #5 of 8
Thread Starter 
Quote:
Originally Posted by Ivan TSI View Post

You should know that in AMD
Lower Timings > higher speed
IMO the best ram for AMD is the GSkill Eco 1600 CL7 1.35v
They can do 1600 CL6 @ ~1.50v
And don't forget to overclock the NB-CPU ( memory controller, not the actual NB) as high as you can.
You wouldn't notice any gain going higher speed unless you can get tighter timings.

Thanks for the suggestion thumb.gif
I really would have bough that kit, but unfortunately it is not available in India mad.gif
Also I mean by saying that I can run at 322 base clock is obviously by running CPU-NB at 3220Mhz.
Thanks for the help ! smile.gif
    
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Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
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post #6 of 8
Thread Starter 

A


Edited by sumitlian - 4/1/12 at 5:06am
    
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Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
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Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
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Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post

You have your Phenom II x6 at a really high 4Ghz and a really lucky RAM kit (normally such settings and capability should not be expected from a 1333 CL9 kit due to lack of binning expectations).  You are probably doing great where you are and upgrades that enable both faster CPU and memory will probably provide insignificant gains versus, say, an upgrade to the next-gen "Piledriver" FX processor on your existing platform, which the money you have now would probably be better used for.


You are probably right. But I've seen in some benchmarks that L3 cache of Thuban becomes much faster when IMC is increased close to or equal to default 1366/1156 socket CPUs. Intel CPUs have higher IPC and low speed factor because of perfect ratio between L3 and DRAM freq. AMD cpus have higher speed factor between L3/IMC and DRAM freq. because they lacks enough memory bandwidth. And I don't know why but I believe a little bit of overall Instructions per cycle of our Thuban bottlenecks due to low memory bandwidth bidirectionally. I also know Thuban is beaten by a huge margin in many integer benches because of lacking full SIMD, SSE4 and other instruction sets which has already been implemented in Intel CPU's. But in spite of this Thuban seems really faster than most 1366/1156 cpus. I don't know Whatever the result would be.....but I am just curious what will happen when I use high frep. low timing memory at High CPU-NB freq. between 3000-3200. I know I might not be able to make it stable at this oc, but just want to know the result.
    
CPUMotherboardGraphicsRAM
The Intel Core i3-4150 @ 3.5 GHz Asus B85M-G Rev 1.01, Bios: 2501 AMD Radeon HD 7850 ♥ 1GB 2x 4GB DDR3 1600 MHz CL9 
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Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
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Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
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CPUMotherboardGraphicsRAM
The Intel Core i3-4150 @ 3.5 GHz Asus B85M-G Rev 1.01, Bios: 2501 AMD Radeon HD 7850 ♥ 1GB 2x 4GB DDR3 1600 MHz CL9 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 750 EVO 250GB Seagate Barracuda 1TB 7200.14 Seagate 500 GB 2.5" Samsung DVD/RW 
CoolingOSMonitorKeyboard
Corsair H70 Windows 10 64 bit Samsung A300N 20" 1600 x 900 60Hz 5ms 19Watt PS/2 Microsoft Wired Keyboard 500 
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post #8 of 8
Testing of real world apps will give you the true change in system performance. Synthetic benches are not the same as real apps. and will show tiny gains that typically do not transfer into real world apps. There is plenty of objective RAM frequency/latency testing online by Tom's, AnandTech, X-Bit Labs and other's but you can do your own and get the same results.

http://www.overclock.net/t/1237178/is-o-cing-my-ram-worth-the-trouble/10#post_16866854
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