Kingston RAM reporting half its value...with a twist!

blacklight124 · Aug 29, 2014

Ok so this is going to be a long one...

MOBO: Asus M4A78-VM
OS: Windows Server 2008 R2 (at home)

So I purchased 2 sticks of RAM off ebay as theyre hard to come by for this MOBO now. I wanted 8GB. These were advertised as 4GB each.

RAM: Kingston KVR800D2N6/4G. (Its in the supported list for my mobo)

So I pop them in, it only reports 6GB in the Bios & in windows it says 8GB (5.75GB usable). From Resource Monitor the other 2+GB is hardware reserved... So I try it one stick at a time. One reports 4GB. The other only 2GB.

Both sticks have the same model number but this is where I noticed the difference...

There's another couple numbers on there. As follows:

GOOD STICK:

9905474-029.A00LF
BKME08B1317

BAD STICK:

99P5474-013.A00LF
BKMK0891317

Now Ive not been able to find anything from googling those numbers. Everything else on the 2 sticks is identical. So you're thinking..."its a faulty unit" "those numbers are just revision numbers" etc.

This is where it twists...I ordered from another buyer, same model number and it arrives, I put it in and same again, 2GB. It has the exact same extra numbers as the bad stick above.

Could this be some kind of older or newer revision of the same RAM model that isnt supported by my MOBO? I have no idea!?

I dont want to leave the "BAD" ram in too long for testing in case it totally corrupts my PC. Any thoughts?

Here's an output from CPU-Z: (with one good & one bad stick in)

Memory SPD
-------------------------------------------------------------------------

DIMM # 1
SMBus address 0x50
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Kingston (7F980000000000000000)
Size 4096 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number 99P5471-013.A00LF
Serial number 16EE28EF
Manufacturing date Week 09/Year 14
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 4.0-4-4-12-16 @ 266 MHz
JEDEC #2 5.0-5-5-15-20 @ 333 MHz
JEDEC #3 6.0-6-6-18-24 @ 400 MHz

DIMM # 2
SMBus address 0x51
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Kingston (7F980000000000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number 9905403-001.A03LF-
Serial number 0B0AB0D5
Manufacturing date Week 01/Year 14
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 3.0-3-3-9-12 @ 200 MHz
JEDEC #2 4.0-4-4-12-16 @ 266 MHz
JEDEC #3 5.0-6-6-18-24 @ 400 MHz

DIMM # 1
SPD registers
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 80 08 08 0E 0B 61 40 00 05 25 40 00 82 08 00 00
10 0C 08 70 01 02 00 07 30 45 3D 50 3C 1E 3C 2D 02
20 17 25 05 12 3C 1E 1E 00 06 3C 7F 80 14 1E 00 00
30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12 E3
40 7F 98 00 00 00 00 00 00 00 39 39 50 35 34 37 31
50 2D 30 31 33 2E 41 30 30 4C 46 00 00 00 14 09 16
60 EE 28 EF 00 00 00 00 00 00 00 00 00 00 00 00 00
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
90 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

DIMM # 2
SPD registers
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 80 08 08 0E 0B 61 40 00 05 25 45 00 82 08 00 00
10 0C 04 38 01 02 00 07 3D 50 50 60 3C 1E 3C 2D 01
20 20 27 10 17 3C 1E 1E 00 00 3C 69 80 18 22 00 00
30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12 ED
40 7F 98 00 00 00 00 00 00 00 39 39 30 35 34 30 33
50 2D 30 30 31 2E 41 30 33 4C 46 2D 01 00 14 01 0B
60 0A B0 D5 FF FF FF FF FF FF FF FF FF FF FF FF FF
70 FF FF FF FF FF FF FF FF FF FF FF FF FF FF 44 B2
80 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
90 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
D0 FF FF 56 38 30 30 01 2A 03 00 A1 8E 1B 14 20 22
E0 00 00 00 00 02 00 1C 05 00 00 FF 00 00 00 00 00
F0 00 00 FF 00 00 00 00 00 00 00 28 FB FF FF FF FF

popatim · Aug 29, 2014

Google says the one you have marked as the good one - is only 2gb which matches what you have in the quote for dimm 2.

Ie - they sent you a wrong stick.

kingstonhq · Sep 4, 2014

Hi, I'm Jewel with Kingston Technical Support and would like to offer our assistance. Neither of those 99 numbers coincides with part number KVR800D2N6/4G. Matching the Part number and that 99 number is how we verify if a product is valid. Since those do not match in our system the memory you received is counterfeit. I recommend requesting a refund for the memory. We do still currently manufacture 2GB modules for your system, part number KVR800D2N6/2G (http://www.kingston.com/us/memory/search/?partid=kvr800d2n6/2g). On that page you can click buy and there will be links to valid resellers where the memory can be confidently purchased. For further assistance, please call us at 1-800-435-0640 (USA and Canada only) M - F 6am - 6pm PT and I or another available Technician will assist you.

Thank you for selecting Kingston as your upgrade partner.

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Kingston RAM reporting half its value...with a twist!

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