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Search: Posts Made By: Khenglish
Forum: Hardware Modding 03-08-2017, 09:48 PM
Replies: 1
Views: 2,821
Posted By Khenglish
Also 1080 memory would work as well. It's only...

Also 1080 memory would work as well. It's only rated for 10 GHz, but can still be used to test if it works and should overclock about the same anyway.
Forum: Hardware Modding 03-08-2017, 04:28 PM
Replies: 1
Views: 2,821
Posted By Khenglish
Looking for MT58K256M321-Ja110 to add 12th memory chip to 1080 TI

I have a friend who is getting a 1080 TI shortly. I can easily physically add the missing 12th memory chip. It probably won't work, but it's easy and safe enough to do that I might as well try it.
...
Forum: Hardware Modding 08-11-2016, 10:35 PM
Replies: 4
Views: 1,877
Posted By Khenglish
So Samsung is currently sampling 9GHz rated GDDR5...

So Samsung is currently sampling 9GHz rated GDDR5 chips. I asked them if I could sample some, and they had the nerve to ignore my request! Who could have seen that coming! (sarcasm)
Forum: Hardware Modding 08-08-2016, 10:00 PM
Replies: 4
Views: 1,877
Posted By Khenglish
980 core swap to 980m PCB success

Due to a stupid accident by me, I acquired a 980m with a chunk knocked out of the core. Not wanting to scrap a perfectly good top end PCB for parts, I wanted to replace the core. You can see the...
Forum: Hardware Modding 07-01-2016, 01:58 AM
Replies: 13
Views: 2,680
Posted By Khenglish
I find overclocking desktops to be too easy. You...

I find overclocking desktops to be too easy. You just download a program and with no effort get sizable overclocks.

Give me the same chips but with garbage VRMs with horrific filtering, and now...
Forum: Hardware Modding 06-30-2016, 11:49 PM
Replies: 13
Views: 2,680
Posted By Khenglish
So not wanting to spend a few hours reballing the...

So not wanting to spend a few hours reballing the original crappy core, I bought and put on a $20 ebay core from china. The core is 3% faster than the last, which is less than I was hoping for, but...
Forum: Hardware Modding 06-13-2016, 01:10 AM
Replies: 13
Views: 2,680
Posted By Khenglish
So I was really careful on the remount this time...

So I was really careful on the remount this time and everything went well... still shorts on both memory and core.

I'm not sure if the first try really did have shorts or not. It did after I...
Forum: Hardware Modding 06-08-2016, 10:37 PM
Replies: 13
Views: 2,680
Posted By Khenglish
Photos huh? Well here's the brain with the card...

Photos huh? Well here's the brain with the card removed.

http://i.imgur.com/0vq9Hc1.jpg
Forum: Hardware Modding 06-05-2016, 01:40 PM
Replies: 13
Views: 2,680
Posted By Khenglish
Lol its all a hackjob with no legit rework...

Lol its all a hackjob with no legit rework station. For cores I use a toaster oven with a thermocouple. The toaster is pretty bad at regulating the temperature on its own, so I set it high and crack...
Forum: Hardware Modding 06-02-2016, 01:40 AM
Replies: 13
Views: 2,680
Posted By Khenglish
OK, so I removed the solder balls (63/37) with a...

OK, so I removed the solder balls (63/37) with a heat gun and found that I did a crappy job removing the original unleaded balls off the core, particularly around the outside where it shorted. I...
Forum: Hardware Modding 06-01-2016, 02:52 PM
Replies: 13
Views: 2,680
Posted By Khenglish
I finally pulled the core today. There were...

I finally pulled the core today. There were several shorts in the memory IO region. I'm out of desoldering braid though so it will take a while before I can retry it.
Forum: Hardware Modding 04-25-2016, 12:27 PM
Replies: 13
Views: 2,680
Posted By Khenglish
It could be just random shorts, but I have doubts...

It could be just random shorts, but I have doubts on that. Usually when I screw up a bga mount the die is slightly tilted on the pcb, but in this case it is level on all 4 sides. Both memory and core...
Forum: Hardware Modding 04-23-2016, 01:51 PM
Replies: 13
Views: 2,680
Posted By Khenglish
RV770 & RV790 bga pinouts

So I switched a RV790 core from an HD 4890 onto a 4850m hoping it would work (stock core is a fully enabled RV770). I got the core on well, but I read full core and memory shorts with a multimeter,...
Forum: Hardware Modding 12-27-2015, 05:08 PM
Replies: 10
Views: 2,654
Posted By Khenglish
Eh I guess it is just a 970. I'm used to calling...

Eh I guess it is just a 970. I'm used to calling anything from MSI Lightning.
Forum: Hardware Modding 12-22-2015, 01:08 AM
Replies: 10
Views: 2,654
Posted By Khenglish
Had one. The deal was I buy it from a friend for...

Had one. The deal was I buy it from a friend for $250. If after swapping memory the card works with the memory at at least 6ghz, he'd buy it back for $200. After fixing the memory manufacturer...
Forum: Hardware Modding 12-17-2015, 01:54 AM
Replies: 10
Views: 2,654
Posted By Khenglish
So I found the 970's memory ID resistor. Changing...

So I found the 970's memory ID resistor. Changing it to Hynix did nothing and max clocks are still ~2100 MHz effective. It looks like the vBIOS lacks a Hynix timings table.

It's an MSI lightning,...
Forum: Hardware Modding 12-11-2015, 04:21 AM
Replies: 10
Views: 2,654
Posted By Khenglish
So timings are 100% the problem. I did find the...

So timings are 100% the problem. I did find the manufacturer resistor and changed it to Samsung. I can now bench up to 7.5GHz, but my 100% stable clocks dropped to maybe 6.5ghz at best. This is a...
Forum: Hardware Modding 12-10-2015, 03:27 AM
Replies: 10
Views: 2,654
Posted By Khenglish
Most 980m cards do have Samsung chips....

Most 980m cards do have Samsung chips. Unfortunately they are all 8GB cards, which probably won't play nice with my 4GB card. The flash chip looks like it won't fit in my programmer, so I'm hesitant...
Forum: Hardware Modding 12-02-2015, 12:49 AM
Replies: 10
Views: 2,654
Posted By Khenglish
So I thought the chip was dead with 3 pads...

So I thought the chip was dead with 3 pads missing, and the first schematic I saw looked like 2 of the pads were address lines. It was the wrong schematic though (google image search cannot find any...
Forum: Hardware Modding 11-28-2015, 12:23 AM
Replies: 10
Views: 2,654
Posted By Khenglish
Switched 7/8 memory chips, then broke last chip...

After raising the memory voltage from 1.35V to 1.48V (I tried for 1.5V), and still having lackluster memory clocks on my 980m of just under 6400MHz stable, I decided to switch out the memory for the...
Forum: Hardware Modding 06-01-2014, 11:34 PM
Replies: 11
Views: 8,954
Posted By Khenglish
Well I had even more high-side FETs fail, and the...

Well I had even more high-side FETs fail, and the last one killed the CPU VRM (now outputs an invalid PWM signal for IGP voltage, despite never touching IGP circuit). Mouser had the VRM in stock. ...
Forum: Hardware Modding 04-26-2014, 09:26 PM
Replies: 11
Views: 8,954
Posted By Khenglish
I put the fets in the clevo. High side fets are...

I put the fets in the clevo. High side fets are failing after 1-3 minutes of light use. The source and drain are shorting. Ocp is saving the mobo and cpu, but obviously this is very bad. They are...
Forum: Hardware Modding 04-20-2014, 12:56 AM
Replies: 11
Views: 8,954
Posted By Khenglish
I successfully swapped a high side FET on my...

I successfully swapped a high side FET on my spare laptop. I left the other 2 phases untouched. I'll swap out the low-side FETs on the same phase tomorrow. I probably won't get to the clevo until...
Forum: Hardware Modding 04-12-2014, 01:22 PM
Replies: 11
Views: 8,954
Posted By Khenglish
The CPU heatsink already covers the inductors and...

The CPU heatsink already covers the inductors and FETs so that should do it.

FETs ordered. Got some extras that I'll first solder onto an older laptop to make sure I don't screw up and need a new...
Forum: Hardware Modding 04-11-2014, 12:46 PM
Replies: 11
Views: 8,954
Posted By Khenglish
OK there's a password on the excel doc, but I...

OK there's a password on the excel doc, but I used the formulas to make my own doc and what I'm getting is that for high-side using a bigger FET hurts, and adding an extra 1516 is a wash. Basically...
Showing results 1 to 25 of 28

 
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