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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 135

post #1341 of 3354
Anyone have a list of all settings for Polaris Bios Editor needed for a Sapphire RX 480 Nitro+ OC 8Gb, using 1342/2000 bios that will make the temp stay at 65 degrees or under for gaming, card it reaching 80+ and doesn't seem right to me. Also would like to see settings for under voltage to fix the power issue.
post #1342 of 3354
Thread Starter 
Quote:
Originally Posted by Loladinas View Post

I think it's both the IMC and VRAM chips, as I have seen improvements after improving cooling on both. Previously I was unable to clock the memory (with stock timings, obviously) past 2200MHz, and even then it needed 5-8C air going into it and 2500RPM fans. After applying a heatsink I can do 2250MHz (with errors, but it doesn't crash), with fans spinning at about 1000RPM and a more reasonable air temp of 18C. And error rate at lower frequencies has decreased.

I haven't noticed any benefits of increasing IMC voltage either.

555000000000000022CC1C00AD615B41C0570E15B00B450A0068C7000B031420FA8900A0030000001B11333DC0303A17

relaxed some timings...
same bandwidth but realworld performance is a bit lower at the same frequency(1% maybe). BUT now you can "overclock" a little. for me 2125mhz stable. Testing 2150Mhz
925mv@2150mhz Errors
950mv@2150mhz better but not perfect
testing now 1000mv

EDIT:

555000000000000022CC1C00AD615A41C0570E152DCB74090068C7000B031420FA8900A003000000190F2F39B22D3517

even more "extreme" timings. 236GB/s@2100Mhz now.

a looooot of testing needed
Edited by generaleramon - 2/21/17 at 12:44pm
post #1343 of 3354
@generaleramon huge work you are doing here!!!

Tested the previous ones before this last post and pushed 2130MHz, gained like 80 points in firestrike compared to 1625 timings at 2140MHz (which is already pretty aggressive).
post #1344 of 3354
Quote:
Originally Posted by generaleramon View Post

555000000000000022CC1C00AD615B41C0570E15B00B450A0068C7000B031420FA8900A0030000001B11333DC0303A17

relaxed some timings...
same bandwidth but realworld performance is a bit lower at the same frequency(1% maybe). BUT now you can "overclock" a little. for me 2125mhz stable. Testing 2150Mhz
925mv@2150mhz Errors
950mv@2150mhz better but not perfect
testing now 1000mv

EDIT:

555000000000000022CC1C00AD615A41C0570E152DCB74090068C7000B031420FA8900A003000000190F2F39B22D3517

even more "extreme" timings. 236GB/s@2100Mhz now.

a looooot of testing needed
Tested those two timings against each other, at 2150MHz. Basically no performance difference (62.4 vs 62.9 FPS in Valley respectively), but the latter timings topped out at 77 errors per run, former got up to 6. That's at 1000mV IMC. At 900mV I'm actually getting less errors. 3 vs 62.
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post #1345 of 3354
Thread Starter 
Quote:
Originally Posted by Loladinas View Post

Tested those two timings against each other, at 2150MHz. Basically no performance difference (62.4 vs 62.9 FPS in Valley respectively), but the latter timings topped out at 77 errors per run, former got up to 6. That's at 1000mV IMC. At 900mV I'm actually getting less errors. 3 vs 62.

the "236gb" timings where not intended for 2100+ mem anyway biggrin.gif

rolleyes.gif 1500Mhz Core
post #1346 of 3354
Quote:
Originally Posted by generaleramon View Post

the "236gb" timings where not intended for 2100+ mem anyway biggrin.gif

rolleyes.gif 1500Mhz Core
Oh, that old thing? I've had it set to that for ages biggrin.gif It can bench a wee bit higher - Firestrike run. Heatsinks aren't pretty but can't argue with results.

Back to your "relaxed" timings. 2200MHz artifacts and crashes, 2175MHz some artifacts, but doesn't crash.
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post #1347 of 3354
I can't recall who asked for info on adding VDDC offset in ROM, as I have had quite a few PM relating to bios mod redface.gif .

I replied to that person that I would do a video guide on process, here it is, view carefully and apply to Polaris ROM only if you have IR3567B on PCB.

Note: This guide is for where IR3567B is used on PCB as Voltage Control Chip.

Link to video.

Attached is guide.txt seen in linked video.

guide.txt 3k .txt file

GoogleDoc link to IR3567B registers I'm aware of. The process shown in the video can be used to add registers which may not be in the VoltageObjectInfo of your ROM.

Note: Use above GoogleDoc information with caution as potential for killing card.
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post #1348 of 3354
Thread Starter 
Quote:
Originally Posted by Loladinas View Post

Oh, that old thing? I've had it set to that for ages biggrin.gif It can bench a wee bit higher - Firestrike run. Heatsinks aren't pretty but can't argue with results.

Back to your "relaxed" timings. 2200MHz artifacts and crashes, 2175MHz some artifacts, but doesn't crash.

happy to see that at least you can pass the 2150 barrier without a instant crash. i don't really care about the my max memclock anyway...i only want the max possible performance.

---
time ago I have tried for a week to overclock my system ram to 2400mhz cl10(because higher is better, right?rolleyes.gif) and then find out that 2133cl9(and a lot of other lower subtimings) was way better for my system. Lower access time and the same bandwidth or even better. Big numbers are for screenshots biggrin.gif. Performance is in the balanced fine tuning
---
post #1349 of 3354
Quote:
Originally Posted by generaleramon View Post

happy to see that at least you can pass the 2150 barrier without a instant crash. i don't really care about the my max memclock anyway...i only want the max possible performance.

---
time ago I have tried for a week to overclock my system ram to 2400mhz cl10(because higher is better, right?rolleyes.gif) and then find out that 2133cl9(and a lot of other lower subtimings) was way better for my system. Lower access time and the same bandwidth or even better. Big numbers are for screenshots biggrin.gif. Performance is in the balanced fine tuning
---
Yeah, I backed down to 1500/2125MHz. Nice round numbers, no errors, and it does scale up to that point pretty much linearly. Both memory and core. That's probably as much performance as I'm going to get out of this card for daily usage.

Funny you mentioned RAM, that's what's holding my system back the most. 1600CL9. And trying to overclock 32GB of it is a pain in the hind regions. Change one timing, leave the test running overnight, find several memory errors next morning. Rinse, repeat. I just keep it at stock now, despite that even when I had it at 2133CL11 I saw basically ~10% increase in Valley/FS scores.
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post #1350 of 3354
Thread Starter 
Quote:
Originally Posted by Loladinas View Post

Yeah, I backed down to 1500/2125MHz. Nice round numbers, no errors, and it does scale up to that point pretty much linearly. Both memory and core. That's probably as much performance as I'm going to get out of this card for daily usage.

Funny you mentioned RAM, that's what's holding my system back the most. 1600CL9. And trying to overclock 32GB of it is a pain in the hind regions. Change one timing, leave the test running overnight, find several memory errors next morning. Rinse, repeat. I just keep it at stock now, despite that even when I had it at 2133CL11 I saw basically ~10% increase in Valley/FS scores.
Is a reference card? What cooling are you using?
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