SDram Binning Info

[austin86]

Finding good info on SDram and how far what chips clock is hard these days, But I found an article with some really good info on the topic

www.vogons.org/viewtopic.php?f=46&t=83646

From the article (Its worth noting those PN are the PN on the chips themself)

I) The ustal ones are the most with 8ns and some with 7,5ns

Silcom: SIL16M08Cb7532
Vigour: VC5364161UT-08
Micron: 48LC16M8A2 75E
MDT: 33S25680-7,5

II) The good ones overclock between the range: 150-166 MHz:

HYNIX/Hundai: HY57V64820HG T-H, HY57V28820HCT-H oraz HY57V28820HCT-K
Samsung: K4S560832C-TC75
M.tec: TBS6408B4E-6
NANYA: NT56V66100OT-75
SMART: TMM3V64M4I8U-5
AM1: 11280816A -7A
POINTEC: PT481616TG-6
LGS: GM72V16821CT10K

III) These are the solid ones they range from 166 MHz do 179 Mhz

CORSAIR: 32M8ABCG PS1300648
Micron: 48LC16M8A2 75B oraz 48LC32M8A2 7ED
Samsung: K4S560832E-TC75 oraz K4S560432C-TC75
Mosel: V54c365804VCT7
Lei: LES64408TA-7,5
HYUNDAI: GM72V66841ET75
Infineon: HYB39S128800CT-7,5

IV) The extraordianry ones (they should be able to reach 166 MHz at CL2-2-2-7/6)

Mosel Vitelic: V54C3256804VBT7PC - 181 MHz CL 3-3-3-7
Hyundai/HYNIX: HY57V28820AT-H - 182 MHz CL 3-3-3-7
Infineon: HYB39S128800CT-7 – od 182 do 189 MHz CL 3-3-3-7
VM: VT56SD32M8PC-7 – 186 MHz CL 3-3-3-7
Settec: PM72V28841CT-6K – 186 CL CL 3-3-3-7

V) And finally the EXTREME ones. Those are the best in my experience (from 195 up to 210+ and more...)

Qimonda: HYB39S256800FE-7 datasheet
Infineon: HYB39S256800FE-7 datasheet
Mosel Vitelic: V54C3256804VDI7PC

[Macsbeach98]

Where are PSC I have a couple of Buffalo sticks here that are PSC chipped and they will do over 200 easily

[Mr.Scott]

Yup, me too.
Qimonda is the usual goto though.

[antinomy]

Sept 15, 2022 19:20:11 GMT -5 Mr.Scott said:

Qimonda is the usual goto though.

This. You need Qimonda/Infineon FE-7 and nothing else can match them.

Pete, how good are PSC, 200 is at 2-2-2 or 3-3-3?

Here's my recent study. I've managed to find some very fresh Micron 6ns chips - 2015 and 2017 year of production. I've found Kingmax tinyBGA, Kti (same chips), Micron BGA. Almost all interesting alternatives I could find. Nothing even close to Qimonda. If you need, I can post photos of my sticks.

[Macsbeach98]

From what I remember they will 2-2-2 I have never pushed them that far but the fella I got them off recommended them highly.

[MachineLearning]

Sept 15, 2022 20:22:30 GMT -5 antinomy said:

Sept 15, 2022 19:20:11 GMT -5 Mr.Scott said:

Qimonda is the usual goto though.

This. You need Qimonda/Infineon FE-7 and nothing else can match them.

Pete, how good are PSC, 200 is at 2-2-2 or 3-3-3?

Here's my recent study. I've managed to find some very fresh Micron 6ns chips - 2015 and 2017 year of production. I've found Kingmax tinyBGA, Kti (same chips), Micron BGA. Almost all interesting alternatives I could find. Nothing even close to Qimonda. If you need, I can post photos of my sticks.

View Attachment

Are there any acceptable FE-7 alternatives from Infineon? I know everything else is inferior, but is any other SDR IC consistently good? I see a lot of CT-8, CT-7.5, BT-8, etc. on eBay but no FE-7 yet.

edit: Grabbed some 2x 128MB CT-7 sticks to play with. Even if they aren't great, they can be beater SDR. I have only one other stick of CT-7.5 . The eBay seller has many more of the same, I will link it here if anyone wants. Hope they work.

[antinomy]

Nov 9, 2022 0:34:31 GMT -5 MachineLearning said:

Are there any acceptable FE-7 alternatives from Infineon? I know everything else is inferior, but is any other SDR IC consistently good? I see a lot of CT-8, CT-7.5, BT-8, etc. on eBay but no FE-7 yet.

edit: Grabbed some 2x 128MB CT-7 sticks to play with. Even if they aren't great, they can be beater SDR. I have only one other stick of CT-7.5 . The eBay seller has many more of the same, I will link it here if anyone wants. Hope they work.

If you're talking about Infineon/Qimonda, no alternatives to FE-7. First letter stands for generation, F is 11nm. You can see CT-7 results in my table, nothing impressive. PSC are an alternative.