UPDATED INFO, EFFECTIVE AS OF JUNE 9 2008:
We will no longer be using Micron ICs in our PC8500 parts due to lack of availablility from Micron.
Additional DDR2 IC information can be found here:
http://www.houseofhelp.com/forums/sh...ad.php?t=57334
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UPDATED INFO, EFFECTIVE AS OF JUNE 9 2008:
We will no longer be using Micron ICs in our PC8500 parts due to lack of availablility from Micron.
Additional DDR2 IC information can be found here:
http://www.houseofhelp.com/forums/sh...ad.php?t=57334
Hey guys!
This is the part of our announcement where I will inject some of the data from our lab. As already mentioned, the new 8500C5D is built with Qimonda DRAM chips. How to tell them from its Micron-based predecessor, you'd ask? Look at the label on a module pictured below, please. Two pieces of information need to be acknowledged, which indicate 8500C5D to be Qimonda-based:
2.1V nominal voltage and ver2.2 revision
http://www.clockmehigh.com/TestingAt..._21V_ver22.jpg
I randomly selected one of the validated production kits and put it through extensive testing, then compiled some good data for easy viewing. For the testing platform, I chose Asus P5K Deluxe, based on Intel P35 chipset.
Test setup:
Asus P5K Deluxe, BIOS 0501
Intel C2D E6850, 3.00GHz, 1333FSB, 4MB L2
Corsair TWIN2X2048-8500C5D 2.1V ver2.2
eVGA 8800 GTS 640MB Superclocked
Corsair 620 HX PSU
Let's start off with BIOS configuration. Below you can see how the motherboard has been configured for the purpose of our lab testing. Those should be considered a guideline only, as some of the settings (e.g. CPU multiplier or FSB Frequency) might differ depending on a CPU end-user chooses to use.
BIOS --> Advanced -->JumperFree Configuration:
Ai Overclocking - [Manual]
CPU Ratio Control - [Manual]
Ratio CMOS Setting - [9]
FSB Strap to North Bridge - [Auto]
FSB Frequency - [333]
PCIE Frequency - [100]
DRAM Frequency - [DDR2-1067MHz]
DRAM Command Rate - [Auto]
DRAM Timing Control - [Manual]
CAS# Latency - [5 DRAM Clocks]
RAS# to CAS# Delay - [5 DRAM Clocks]
RAS# Precharge - [5 DRAM Clocks]
RAS# Activate to Precharge - [15 DRAM Clocks]
tWR - [Auto]
tRFC - [Auto]
tWTR - [Auto]
tRRD - [Auto]
tRTP - [Auto]
DRAM Static Read Control - [Auto]
Transaction Booster - [Auto]
Clock Over-Charging Mode - [Auto]
CPU Spread Spectrum - [Disabed]
PCIE Spread Spectrum - [Disabled]
CPU Voltage - [1.3500v]
CPU Voltage Ref - [Auto]
CPU Voltage Dumper - [Auto]
CPU PLL Voltage - [1.50v]
DRAM Voltage - [2.10v]
FSB Termination Voltage - [1.30v]
North Bridge Voltage - [1.55v]
North Bridge Voltage Reference - [Auto]
South Bridge Voltage - [Auto]
Default frequency DDR2-1066 5-5-5-15 @ 2.10v
Now, let's take a look at some stability tests performed at default 2.1v voltage. After our standard production test, I tested our setup with 2 as well as 4 DIMM sockets populated, 2GB and 4GB respectively, in OS environment. Stress test of choice is ORTHOS, which is a 3-rd party GUI for well respected Prime95. Additionally, I have performed some 3D testing and gaming at those settings, and system worked perfectly as well.
ORTHOS 21hrs - 2x1GB DDR2-1066 5-5-5 @ 2.10v ----- ORTHOS 24hrs - 4x1GB DDR2-1066 5-5-5 @ 2.10v
http://www.clockmehigh.com/TestingAt..._21hrs_4x3.gif http://www.clockmehigh.com/TestingAt..._24hrs_4x3.gif
Default frequency DDR2-1066 5-5-5-15 @ 1.90v
Important, and interesting at the same time is the fact that the new TWIN2X2048-8500C5D actually requires only 1.90v to operate properly on some motherboards, including eVGA 680i and Asus P5K Deluxe. Keep in mind however 2.1v is still this kit's official specification. Therefore consider ability to perform at 1.9v a "neat feature" that may be exclusive to selected few motherboards.
ORTHOS 48hrs - 2x1GB DDR2-1066 5-5-5 @ 1.90v ----- ORTHOS 96hrs - 4x1GB DDR2-1066 5-5-5 @ 1.90v
http://www.clockmehigh.com/TestingAt..._48hrs_4x3.gif http://www.clockmehigh.com/TestingAt..._96hrs_4x3.gif
----- Overclocking @ CL5 -----
In this paragraph, I have compiled results of my overclocking attempts at default timings 5-5-5-15.
ORTHOS 24hrs - DDR2-1110 5-5-5 @ 2.10v ------- Dual SPi32M - DDR2-1120 5-5-5 @ 2.10v
http://www.clockmehigh.com/TestingAt..._24hrs_4x3.gif http://www.clockmehigh.com/TestingAt...SPi32M_4x3.gif
SPi1M + SPi32M - DDR2-1120 5-5-5 @ 2.10v ------- Sandra XI - DDR2-1120 5-5-5 @ 2.10v
http://www.clockmehigh.com/TestingAt...i1M32M_4x3.gif http://www.clockmehigh.com/TestingAt...MemLat_4x3.gif
PCMark05 Memory - DDR2-1120 5-5-5 @ 2.10v ------- WinRAR - DDR2-1120 5-5-5 @ 2.10v
http://www.clockmehigh.com/TestingAt...05_Mem_4x3.gif http://www.clockmehigh.com/TestingAt...WinRAR_4x3.gif
3DMark2001 - DDR2-1120 5-5-5 @ 2.10v ------- 3DMark03 - DDR2-1120 5-5-5 @ 2.10v
http://www.clockmehigh.com/TestingAt..._3DM01_4x3.gif http://www.clockmehigh.com/TestingAt..._3DM03_4x3.gif
3DMark05 - DDR2-1120 5-5-5 @ 2.10v ------- 3DMark06 - DDR2-1120 5-5-5 @ 2.10v
http://www.clockmehigh.com/TestingAt..._3DM05_4x3.gif http://www.clockmehigh.com/TestingAt..._3DM06_4x3.gif
----- Overclocking @ CL4 -----
I've also decided to take a look at these modules' overclocking potential when timings are tightened to 4-4-4-12. As shown, at around DDR2-900 system remained fully stable.
ORTHOS 24hrs - DDR2-910 4-4-4 @ 2.10v ------- Dual SPi32M - DDR2-910 4-4-4 @ 2.10v
http://www.clockmehigh.com/TestingAt..._20hrs_4x3.gif http://www.clockmehigh.com/TestingAt...SPi32M_4x3.gif
Thank you for your attention!
Thanks for the heads up :)
I just picked up some C5D ver 1.2s, and am curious about the new revisions. I am actually testing running the C5Ds with a pair of 8500C%s to see how they overclock in 4 dimms. The new version seems very interesting.
Has anyone purchased these in the market place yet? Am very interested in these due to the ability to finally run 4GB in the 680i chipset at rated speeds.
can it run at 1T CR ??
:confused: CR?Quote:
Originally Posted by idiot1234556
Command Rate, he asks if you can run it at 1T.
AH...LOL....do I feel dumb, I realized the 1T of course but the "CR" after it threw me off. If the MOBO in question supports 1T, then yes this memory will do it.Quote:
Originally Posted by .devastatioN
^^^^ ROFL quick edit the post :D:D:D j/k
Nah, it's cool. :rofl:Quote:
Originally Posted by dinos22
It's a good reminder to pay better attention and DRINK MORE COFFEE :up:
so whichs one are better the v1.2 or the v2.2???
That depends on what your idea of "better" is. See post #1 and #2.
which one should i buy if i have both of them in front of me? which one will perform better, and be more stable?
Both are equally stable at the rating timings and speed. But, "better" is still relative here. If you mean running 4 up or if you want to run at a lower voltage, then the Quimonda has better characteristics. If you want pure OCing, the Micron version responds to voltage a bit better and may be able to hit a higher speed although nothing over 1066 is guaranteed.
1.2v is the Micron version?
Yes, see this list for info: http://www.houseofhelp.com/forums/sh...ad.php?t=57334
Any 1.* i s Micron.
Any 2.* is Quimonda.
Some questions> I have a problem with booting on my mobo since it tends to revert to default voltage *1.8 or such, on my "old" Micron domis 8500 c5d. As I understand Quimonda runs at lower voltage, so maybe they could boot easier than the Microns`?, Or do I still have to keep a booting crap pair of ram around?
Are there any known problems with "mixing" these two types of ICs in the same system 2*1024 8500 c5d ver 1.x and 2*1024 8500 c5d ver 2.2? Compatibility wise as well as performace wise, without factoring in the generally known overclocking "drawbacks" in regards to 4 gig system memory setups.
The newer revision have ICs similar to what you would call "crap pair of ram" in terms of voltage requirements so even if the BIOS kicked back to 1.8v those sticks would still boot at the timings BIOS defaults back on.Quote:
Originally Posted by ZilverPhish
And you should have no problems mixing the 2 different revisions of the 8500C5D the only differences you will see between the 2 revisions now is their "theoretical" overclockability, they still might overclock well, but Micron is tried and true when it comes to overclocking and how well the IC's respond to voltage increases, and how well they handle lower timings and higher speeds and whatnot :)
Quote:
Originally Posted by Yellowbeard
ROFL! What is next to get downgraded from Micron to Promos or Quimonda? 6400C3? 9136C5D? 8888C4D?
REST IN PEACE(started as Micron, Died as garbage)=
CM2X512A-4300C3
CM2X512A-4300C3PRO
CM2X256A-5400C4
CM2X512-5400C4
CM2X512A-6400
CM2X1024-6400
CM2X2048-6400C5DHX
CM2X1024-6400PRO
CM2XP1024-6400C4
CM2X1024-6400C4/C4DHX
CM2X1024-6400C4D/C4DHX
CM2X1024-6400C4PRO
CM2X1024-8500C5
CM2X1024-8500C5D
I remember when 8500C5 was expensive, top of the line stuff... and now it is garbage :(
Your product numbers and versions only serve to confuse people and screw them should they ever have to RMA.
For how long? A week?Quote:
EDIT: Oh, just so you know, the 8888C4, 6400C3, 9136C5, and 10000C5 are all still Micron-based.
If you have an issue with any of your Corsair memory meeting its specification, please let us know and we'll promptly get it replaced.
How high do the new 70nm ICs oc compared to the d9s (I see you guys did a bit of ocing, but no voltage increases etc)? I would imagine that if they run cooler and use less voltage it would be smart to put them on the higher grade kits too?
8500C5D was top of the line till 8888C4DF,9136C5D,6400C3DF and 10000C5D came and smacked it in the face :)Quote:
Originally Posted by fhpchris
However I was told by Corsair that the 6400C3DF was discontinued recently? So seems just the 3 top end DDR2 kits.
I've been testing these modules for a little over a week on the P5K deluxe and although the results are not as impressive as bachus_anonym I am impressed.
They do what they are rated at and up to about 1088 stable @ stock voltages and latency.
anything above that so far hasn't been achievable and seem unresponsive to voltage increases.
the difference on my part is likely due to the fact that I do not have a fresh clean install and Q6600 G0 instead of the E6850.
http://i201.photobucket.com/albums/a...7_18-09-22.png
http://i201.photobucket.com/albums/a...7_22-32-43.png
http://i201.photobucket.com/albums/a...7_22-47-19.png
How far have you pushed these in your labs? :D
2.2V 1200 4-4-4-4 PL5 1M stable?