Anyone Got Any Info On This New Samsung K4AAG085W?-BCPB Single-Rank 16Gb Density Memory? - Overclock.net - An Overclocking Community

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Anyone Got Any Info On This New Samsung K4AAG085W?-BCPB Single-Rank 16Gb Density Memory?

 
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post #1 of 5 (permalink) Old 12-02-2019, 04:47 PM - Thread Starter
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Anyone Got Any Info On This New Samsung K4AAG085W?-BCPB Single-Rank 16Gb Density Memory?

The memory I got that has this IC is from a 32GB (2x16GB) DDR4-3000 CL16 kit of GeIL Evo Potenza model #GAPB432GB3000C16ADC being advertised as specifically designed for AMD Ryzen. Unfortunately, Thaiphoon doesn't have a full part number for the IC on this, with a read on either slot giving part number K4AAG085W?-BCPB which I couldn't find any info for whatsoever. My assumption was initially Samsung D-Die, but the info I can find for it online points to a part number with K4A4G085WD, and of course if it were E or S-die the part number would end with those letters.

Not only that, but this stuff has a 16Gb die density, not 4Gb, meaning each 16GB module is actually single-rank which I'd never seen on Samsung DRAM. The manufacturing date for it is very recent, November 4-8/week 45 of this year which is less than 1 month ago. According to Newegg, this kit using that RAM was first available on 10/07/19 so there's no reviews or info on the web about it and based on previous data points I surmised it would be Micron B-Die but it ended up being some type of Samsung IC after installing and checking BIOS and with the latest version of Thaiphoon Burner.


I'd been looking to upgrade to 32GB on the cheap while having a chance at decent performance via tuning and noticed this going on sale for $93, and I ended up getting it at Newegg's eBay store for a paltry $74 after 10% off from a coupon and 10% Bucks and it's impressed me a decent bit so far.

Anyone got any info on these? Thanks so much in advance!

EDIT: so far I've been able to do 3200MHz with somewhat tighter primaries than XMP stable. Secondaries set to XMP. Gonna keep testing this stuff and report my findings!
Attached Thumbnails
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Name:	GeIL GAPB432GB3000C16ADC.PNG
Views:	11
Size:	3.14 MB
ID:	309712  

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Name:	MemTest With Info 3200 Tightened Primaries 300%.PNG
Views:	6
Size:	1.76 MB
ID:	309800  


CPU
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Last edited by DeyEatDaPooPoo; 12-02-2019 at 08:47 PM. Reason: Added Info, Rearranged Order of Paragraphs
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post #2 of 5 (permalink) Old 12-02-2019, 10:30 PM
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M-die

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post #3 of 5 (permalink) Old 12-02-2019, 11:49 PM
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Quote: Originally Posted by Voodoo Jungle View Post
M-die
any interesting quirks of this IC when overclocking?

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post #4 of 5 (permalink) Old 12-03-2019, 09:48 PM - Thread Starter
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Quote: Originally Posted by TK421 View Post
any interesting quirks of this IC when overclocking?
I'm done fully tuning them and with stability testing and benchmarking. I'll make a detailed post and also reply here tomorrow about my experience and results with these but yes, they have a few quirks and don't tune the same as Micron Rev. E or Hynix MFR do. All of them tuned to right about their limit, these Samsung M-Die perform in between Hynix MFR and Micron Rev. E.

Oddities: they don't like voltage and/or heat, particularly past 1.35V. They spit out significantly more memory errors with the exact same tuning if set to 1.4V vs 1.35V. These don't clock high either, only slightly above MFR. My sweet spot for tuning was 3200MHz. Timings in general can be tightened down significantly more than MFR, however. Specifically: tRAS, tRRDS, tRRDL, tFAW, tWR, tCWL, tRTP, and tRDWR. They do somewhat worse than MFR when it comes to tCL and tRFC, and a tiny bit worse on tRC. Rest of the timings are either the same or very similar. tRFC is very similar to Micron Rev. E.

Based on my results I can say that if you're looking for a cheap 32GB kit to tune while getting decent performance these should be the new go-to. Of course, depends on what you want to spend and what you consider cheap: if you're wanting to spend $100 or under these are the best choice and if you're wanting to spend under $150 Micron Rev. E is the best choice.

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RAM
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Hard Drive
ADATA XPG SX8100 1TB NVMe SSD
Hard Drive
Hitachi 3TB 7K3000 3.5" SATA
Hard Drive
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Power Supply
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post #5 of 5 (permalink) Old 12-05-2019, 06:14 PM - Thread Starter
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Quote: Originally Posted by Voodoo Jungle View Post
M-die

Thank you for that. There's a good chance it's either that or A-Die but no confirmation of which either way. Waiting on an update to Thaiphoon Burner that has the IC info to come along. I overclocked and tuned them as far as they'll go and they tune a good amount better than Hynix MFR does. They also overclock better than MFR does on 2nd gen Ryzen. I'm sure I could get even more out of 'em if I had a 3rd gen but performance is between tuned MFR and Rev. E while being cheaper than both so I'm happy.

CPU
AMD Ryzen 7 2700X 8C/16T @3.9-4.3GHz/1.25-1.4V
Motherboard
ASRock B450M Pro4 mATX
GPU
ASRock Phantom Gaming X Radeon RX 570 8GB @1340/2000MHz 1030mV
RAM
GeIL Evo Potenza AMD 32GB DDR4 @3200 16-17-15-17-28
Hard Drive
ADATA XPG SX8100 1TB NVMe SSD
Hard Drive
Hitachi 3TB 7K3000 3.5" SATA
Hard Drive
Hitachi 2TB 7K3000 3.5" SATA
Power Supply
EVGA SuperNova 750 G3 80+ Gold Modular
Cooling
AMD Wraith Prism RGB
Cooling
2x Arctic BioniX 120mm Case Fans
Cooling
BitFenix Spectre PWM 140mm Case Fan
Case
BitFenix Phenom M microATX
Operating System
Microsoft Windows 10 Pro 64-bit
Monitor
Dell SE2717HX 27" 1080p 75Hz FreeSync IPS
Keyboard
Redragon K552 Kumara Red LED Mechanical
Mouse
Logitech G502 Proteus Core
Mousepad
Spigen Mousepad with Sitched Edges
Audio
Kingston HyperX Cloud II Gaming Headset
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