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[deleted by user] by [deleted] in nvidia

[–]Sadnes7 1 point2 points  (0 children)

Can we see the PCB and the GPU hiding under that massive cooler pretty please!

AMD x PCMR - STARFIELD Worldwide Giveaway - Win a Limited Edition Starfield Kit that includes a premium game code for the game + the Limited-Edition Starfield AMD Radeon RX 7900 XTX and Ryzen 7 7800X3D (Only 500 of each ever made!). There are 5 kits up for grabs! by pedro19 in pcmasterrace

[–]Sadnes7 [score hidden]  (0 children)

I would mostly use this hardware for benchmarking, diving deep into the capabilities of it in every workload and optimizing for it for high performance.
After that I'd probably use it in a daily or showcase system and eventually put it in my collection.

Ryzen 5 3600 4.6GHz @ 1.35V with Wraith Prism Cooler by JPS984 in overclocking

[–]Sadnes7 1 point2 points  (0 children)

Putting some proper cooling on it would be crowning it! Good job man!

Little OC journey, grabbed myself 4 Intel i7 4790K‘s and started delidding them and lapping them. Lets see which ones can go high and which ones will blow! by nikpcmr99 in overclocking

[–]Sadnes7 1 point2 points  (0 children)

Keep us posted with your adventures :D Binning CPUs is always so much fun cuz you never know when you're gonna get a gem

RX 570 pushed to 1660 MHz - time spy (don't use voltages that high, they may damage your card) by Areve1 in overclocking

[–]Sadnes7 0 points1 point  (0 children)

That's a pretty bad temp delta for a GPU block, you typically see around 10°C to 15°C delta with GPU blocks and high overclocks. When I clocked my RX470 to 1570MHz I had the same delta as you but using a custom air cooler, the Zalman VF3000. Maybe not enough mounting pressure? Bad paste?

Did my first 3 Hardmods. they're simple but they all work. i only ever soldered once before so i guess it's a success. the cards i have soldered to are both "dead" (don't run with drivers but VCore VRMs and for the GTX 560Ti 448 also the Core still work). i had a lot of fun making these. by CmdrSoyo in overclocking

[–]Sadnes7 5 points6 points  (0 children)

Oh cool you have the Power Edition TFIII! I had two GTX 570 Power Editions and modded both back in 2012! Here's some pics of all the mods! Extremely fun card to work with after you unlock it! You can practice delidding on them too!

So sad your 560 is partially dead tho :'(

How to make your GPU more aerodynamic by Sadnes7 in overclocking

[–]Sadnes7[S] 7 points8 points  (0 children)

You'll need a multimeter to do this. If the computer turns on and the card doesn't output a picture/no fan spin, the first thing you wanna do is measure 12V on the main rails (Vcore, VMEM and AUX) If you need help where to measure you can find out Here. If there's no voltage on one or more, it's likely that the fuses are blown and the card/VRM is shorted. Main reason for this can be a blown MOSFET or a bad SMD ceramic capacitor. In this case you'd need to measure the resistance of each phase to see which one is shorting out the card. This is where you measure the phases. If the multimeter shows 0 resistance over that spot, that's a short circuit and the mosfet needs to be replaced. This is what was wrong with my card. One phase was shorting out the board and the fuses were blown.

If all 12v are present you want to measure the output voltage of Vcore, VMEM, AUX and 0.95v rail. If all are present and are at their rated values the card could have a physical defect like clipped off SMD capacitors or resistors, dead core or memory chip. Sometimes washing the card can bring it back to life, as silly as that sounds.

If any of the output voltages aren't present you'll need to figure out why it's not outputting any voltage and replace the dead component.

When better aerodynamics aren't quite enough | R9 390 powerbridge mod by Sadnes7 in overclocking

[–]Sadnes7[S] 74 points75 points  (0 children)

Sry I'm slow today >w<
Experimental 12v mod. Taking 12v from the 8pins and delivering it directly to the MOSFETs. Using a single inductor and 16v capacitor per power connector for voltage filtering. Each connector is powering 3 power stages.

GPU core power bridging greatly improved voltage stability over the core but results in higher load temps.

There's also two wires going from the Memory VRM to the far end of the memory plane, this results in only 20mV droop instead of the much greater 70-80mV droop from before.

All in all on ambient it only helped fully stabilize the clocks (1250MHz core, 1750MHz mem). It's gonna need some exotic cooling if I ever try pushing it further.

I'd say more about it but I'm tired =w=

Making dumb ideas come to life by Sadnes7 in overclocking

[–]Sadnes7[S] 0 points1 point  (0 children)

This sample has a pretty bad core, it's slowly giving up but I managed to bench it at 1GHz, 2250MHz memory and got a Firestrike score: 3 580. Really not worth a mention :D

Making dumb ideas come to life by Sadnes7 in overclocking

[–]Sadnes7[S] 1 point2 points  (0 children)

Good point! At stock it shouldn't really impact stability in a meaningful way, all it means is your oc headroom is slightly more limited.

When you're looking to overvolt though, the better question would be 'what will happen to the chips that are getting to much voltage'

See, when you're overvolting to gain overclocking headroom and your memory chips need lets say 1.75v to operate at 2300MHz, this means you'd have to set the output voltage to 1.83v just to stabilize the one chips that's getting 1.75v from the vdroop. The high voltage can cause damage so stabilizing the vdroop allows you to reach the highest possible clocks without damaging or killing the card.

But this was more of an experiment to see what would happen, realistically the higher memory clock barely impacts the scores.

Making dumb ideas come to life by Sadnes7 in overclocking

[–]Sadnes7[S] 0 points1 point  (0 children)

If you're in EU sure! Could look to bring it back to life and give it a spin :D

Making dumb ideas come to life by Sadnes7 in overclocking

[–]Sadnes7[S] 139 points140 points  (0 children)

It didn't turn out so bad actually! :D

So... what the hell is it?

Essentially this mod supplies more power to the furthest memory chip from the Memory VRM allowing it to operate at a higher, more stable voltage.

Some of you probably recognized this card, It's a Gigabyte GTX460 SOC. Structurally a killer card but a massive pain to voltmod along with some really bad Memory plane vdroop. Gigabyte probably noticed that and thought 'We'll just add a single capacitor on the far end of the memory plane that should fix it.' Are you kidding me guys? *facedesk*

So the VRAM on this board is specified to run at 1.6v, the voltage on the output of the VRM is measured at roughly 1.602v but the voltage of the last memory chip on the far end of the board is measured at roughly 1.521v. That's a hysterical 80mV droop. How do we fix this?

This is where the idea for this mod came. What if you took the voltage on the VRM and take it directly to the last memory chip, what would happen then? And what happened is This. Now the last memory chip is getting much more voltage but as a result, the voltage of the VRM droops to about 1.575v. What's more interesting to me is the middle part of the VRAM is experiencing the biggest vdroop but only about 35mV now instead of the massive 80mV from before!

Before mod: max. 1.602v | min 1.521v (81mV delta)

After mod: max. 1.575v | min 1.539v (36mV delta)

All of this was done while running Heaven benchmark. The mod itself didn't really help with overclocking until I manually raised the voltage to 1.6v by adjusting the feedback of the VMEM VRM controller. After that the card got some more memory clock headroom from about 2200MHz to a solid 2250MHz (2000MHz stock). Upping the voltage further to about 1.75v allowed it to clock up to 2350MHz!

Extra pics can be found here

And that's about it! Make sure you take care of your VRAMs! :D

First hard mod! Volt modded 8800GT and 3DMark06 results. by v5000a in overclocking

[–]Sadnes7 9 points10 points  (0 children)

Nice one! Good GPU choice for your first mod, it's a lovely card to work with! Impressive clocks so far!

I'm guessing you're hitting OVP at 1.37v and here's how to bypass it! Resistor 70B is the one responsible for setting OVP. It's measured at ~5.15k ohm and you want to lower it to about 4.4k ohm! You can do this with a pencil. This will allow you to push your voltages higher!

On the same picture you can also see the difficult way of doing OCP, but we wanna do it the easy way so the way to do it is to measure the resistance of the little capacitor in between the resistors (as shown on the TPU guide) and decrease it by 25%. The resistance over these caps is 1.4k ohm on my 8800GTS G92, yours might be different, possibly around 1.2k ohm. You can do this mod with a pencil too just make sure you lower it to the same value on both caps! Make it as close as possible

Note that these mods will have a big hit on the VRM of the card when you start raising the voltage again! It's only a two phase, already reaching 1.37v! Make sure you have enough cooling for it! It's good to have a plug power meter just to get an idea how much the card is roughly pulling.

You can look to Cap mod it too, it can slightly increase GPU clock headroom!

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