Sapphire R9 280X Dual-X BIOS 15.041 - Low Hash - page 2.

Delan

newbie

Activity: 11

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Quote from: elpibemaxi on January 30, 2014, 01:50:27 PM

I am now getting about 730 kh/s on mine, using TC 8193, gpu clock 1065, memory clock 1500. Staying at 72-73C at the moment.
Also lowered my screen res to 1024x768, and made sure what is displaying on the screen is static. As soon as something is moving (cgminer window, or whatever) the hashes go down to about 690. Yes, I know, crazy.

With those exact settings I get 717 Kh/s, so it's a bit better than before. First setting where a clock above 1050 isn't counterproductive.

elpibemaxi

newbie

Activity: 27

Merit: 0

I am now getting about 730 kh/s on mine, using TC 8193, gpu clock 1065, memory clock 1500. Staying at 72-73C at the moment.
Also lowered my screen res to 1024x768, and made sure what is displaying on the screen is static. As soon as something is moving (cgminer window, or whatever) the hashes go down to about 690. Yes, I know, crazy.

Delan

newbie

Activity: 11

Merit: 0

Same card, same bios, same problem. Can't get above 708 Kh/s with this card and a engine clock of anything above 1050 lowers the hashrate.
Card gets 64C, but can't read the VRM temps as there are no VRM sensors anymore. Thinking of returning this card if there isn't a fix available.

Some more people seem to think the problem is the VRMs. This is probably a related post on a different forum:

Quote from: genjix on May 07, 2011, 10:03:39 AM

Quote from: bitlotto on May 06, 2011, 07:14:25 PM

Quote from: benjamindees on May 06, 2011, 12:27:38 PM

Quote from: drgr33n on May 06, 2011, 07:26:14 AM

Anyone can help me with updating my bios of a "Sapphire R9 280X OC Dual-X 3GB GDDR5 11221-07-20G"?

Here is the link.

https://docs.google.com/file/d/0B0h262BAwjKuaVNvaWt1bWJpS1U/edit?pli=1

There was no timing or VRM issue in this one, but as it is a previously unseen version: https://www.dropbox.com/s/vp6e4u9oqlemofy/Sapphire_E210400-OX2_AGR.zip

Hi, I got the same card
i've used your bios linked, no changes, if i go over engine 1050 / memory 1500 hasrate down

i've try the vapor-x version too

Quote

Sapphire Radeon R9 280X Dual-X 3G GDDR5 OC UEFI Edition (11221-07-20G)
Elpida   EDW2032BBBG
Try this one, it should work. It is the Vapor-X bios which has 20MHz higher engine clock.
There should be no throttling as the VRM temperatures are around 20°C lower.   https://www.dropbox.com/s/j584q8qh0rd6hyv/Sapphire_E21004_V44_K2_NT_AGR_ELP.zip

got the same perf and same pb going over 1050 / 1500
is there a way to boost those card?

orignal Bios Version : 015.041.000.000.000000
https://drive.google.com/file/d/0B-Zrpt5MaTNPQ0RSZmRyV3AwRE0/edit?usp=sharing

tryed
Sapphire_E21004_V44_K2_NT_AGR Bios Version : 015.039.000.001.000000
Sapphire_E210400-OX2_AGR Bios Version : 015.042.000.001.000000

got the same results

The VRM is probably overheating, a very common issue on recent Sapphire cards.
There is no timing issue with the original bios.

source: https://litecointalk.org/index.php?topic=12369.1215

And probably another related topic:
https://litecointalk.org/index.php?topic=13554.0

Vyker

member

Activity: 93

Merit: 10

Quote from: Gazza1 on January 29, 2014, 11:54:09 PM

It's the vrm temps.

Anything we can do about it?

Gazza1

full member

Activity: 238

Merit: 100

It's the vrm temps.

elpibemaxi

newbie

Activity: 27

Merit: 0

I'm having the same issue...getting about 680 khs on my 280x dual-x with 041 bios...is there any other bios we can use? maybe another brand?

RussIT99

member

Activity: 61

Merit: 10

I have one with the new bios (41) and I can just about get 730 (max) with 1050 core 1500 mem 1130 undervolt

Vyker

member

Activity: 93

Merit: 10

When does it trigger then?

I took it to 84C and was still happy at 690kh/s

Gazza1

full member

Activity: 238

Merit: 100

15.041 BIOS does have throttle problem

Vyker

member

Activity: 93

Merit: 10

Hello,

So it appears Sapphire made a change to their boards recently, all new stock of the Dual-X is arriving with BIOS 15.041 - Which has a really poor hash rate - I can't push it past 700kh/s.

Dropping it to 15.039 BIOS and you can forget about anything over 500kh/s.

15.040 has the temp throttling issue at 74c, this problem doesn't appear to be the case with the 15.041.

So I'm stuck on 15.041 and can't get high enough hash - remember these Dual-X's before the new batch arrived would push 750kh/s easily!

Has anyone else had this issue? is there a fix?

Thanks

Topic: Sapphire R9 280X Dual-X BIOS 15.041 - Low Hash - page 2. (Read 14397 times)