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Author Topic: Sapphie Vapor-X OC 1 Gb HD 5870 5.0 GT/s mod. Which resistor ?  (Read 1405 times)
SMIKX
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« on: August 02, 2017, 02:40:13 PM »

Having done the 5.0 GT/s mod on a newly purchased HIS HD 7950 I'd like to do the same to my backup card ( Sapphire Vapor-X 5870 1 Gb OC ) .

Anyone know which resistor needs to be identified ?

I have scoured the net for info but obviously I haven't found the correct question to ask.

Thanks in advance.
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Mac Pro 4,1 upped to 5,1 Dual Quad Core 2.93ghz 17Gb 480Gb SSD TRIM enabled.
HIS HD 7950 3Gb 5.0 GT/s EFI on mDP to DVI + DVI to DVI.
10.9.5 - 10.12.6  - 10.6.8 - Win 7 not Bootcamp. 
AREA 2 port USB 3.1 & Inateck USB 3.0 4 port in OS X 10.9.5.
Rominator
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« Reply #1 on: August 10, 2017, 01:59:55 AM »

On 5870 it was up near CF bridge, IIRC

Only way to find for certain is to get PC and Apple 5870 and look.
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SMIKX
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« Reply #2 on: August 10, 2017, 04:44:12 AM »

On 5870 it was up near CF bridge, IIRC

Only way to find for certain is to get PC and Apple 5870 and look.

Thanks Rominator .. do you recall the name / designation of the actual resistor ?

Here in Japan used 5870's  ( PC only ) are selling for around ¥2,900 US$26. . but look at this price for for a used "Mac" 5870 . .
http://www.mac-paradise.com/htmls/1100000123866-11.html

. . no mention of genuine 5.0 GT/s link speed.

¥37,750 + 8 % sales tax = ¥40.770 = U.S.$ 370 !    These people have no shame. I won't be buying so I won't be able to compare PCBs.

The 5870 is still a good backup card . . along with the 5770 ( one 6 pin ).

I have a Sapphire Vapor-X O/C 1 gb 5870 and an HIS 5870 1Gb both flashed courtesy of Netkas & your humble self.

I enjoy your forum comments and retorts immensely . . you guys taught me how to fish. . . I've since taught a couple of others here . .a great philosophy that I wholeheartedly support and adhere to.
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Mac Pro 4,1 upped to 5,1 Dual Quad Core 2.93ghz 17Gb 480Gb SSD TRIM enabled.
HIS HD 7950 3Gb 5.0 GT/s EFI on mDP to DVI + DVI to DVI.
10.9.5 - 10.12.6  - 10.6.8 - Win 7 not Bootcamp. 
AREA 2 port USB 3.1 & Inateck USB 3.0 4 port in OS X 10.9.5.
nekton1
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« Reply #3 on: August 13, 2017, 11:24:42 PM »

Thanks to the above hint from Rominator, SMIKX and myself were able to find the solder pads on the relatively ancient Sapphire Vapor-X HD5870 that control the PCIe Gen2 5 GT/s Link speed.
Looking at the back of this card with the Crossfire connector uppermost, you'll see a row of three vertical solder pads sitting in almost empty space below the left row of CF board edge connectors.  I soldered a chip resistor to bridge the two pads furthest from the CF connector and fired up the card (which is flashed with the Netkas rom—thanks Netkas). It shows the following (see screenshot).

SMIKX confirmed this with a 2B pencil using a graphite pencil line between the same two pads.  He has also confirmed the same pads on the HIS 5870.  (The photos of the two boards are from SMIKX.)

The solder job is relatively easy because there is plenty of space around the empty pads—just make sure to clean them first and use a very fine pair of chip tweezers to hold the chip resistor in place while tacking one side and then complete the solder.  Use a good electronics iron or soldering station too. Be sure there are no solder bridges.

It's a small improvement in speed for a little work.

Meanwhile, the search for a solution to why the RX460 does not boot in High Sierra continues.


* Screen Shot 2017-08-13 at 18.04.11.png (171.98 KB, 811x725 - viewed 114 times.)

* Screen Shot 2017-08-14 at 07.10.51.png (184.36 KB, 281x328 - viewed 133 times.)

* Screen Shot 2017-08-14 at 07.11.02.png (151.57 KB, 271x258 - viewed 128 times.)
« Last Edit: August 14, 2017, 12:39:37 AM by nekton1 » Logged
SMIKX
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« Reply #4 on: August 14, 2017, 05:27:26 PM »

I put up a webpage with nice big photos here http://www.hatsuon.net/cMP_5.0_MOD.html

Enjoy !
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Mac Pro 4,1 upped to 5,1 Dual Quad Core 2.93ghz 17Gb 480Gb SSD TRIM enabled.
HIS HD 7950 3Gb 5.0 GT/s EFI on mDP to DVI + DVI to DVI.
10.9.5 - 10.12.6  - 10.6.8 - Win 7 not Bootcamp. 
AREA 2 port USB 3.1 & Inateck USB 3.0 4 port in OS X 10.9.5.
SMIKX
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« Reply #5 on: August 19, 2017, 07:37:34 PM »

Since ( with Netkon1's implicit permission  = he did the mod about an hour before I did .. . )  .. . putting up a webpage ( which I pay for ) that shows how to mod a REF. Radeon HD 5870 to 5.0 GT/s . .I have been very  unimpressed by the response. ( I have absolutely no ambition to become any kind of internet superstar.)

However ..  prior to my putting the " 5.0 GT/s HD 5870 . .how to " guide up .. the views for this thread stood at 271 for quite a while..

Since I put up "How to 5.0 GT/s hd 5870 guide "the "VIEWS" have jumped to 439  at last count.. that figure increased within a 72 hour period.

So . .obviously many still cherish their HD 5870 cards . . which are now dirt cheap and very good for getting some "hands on " experience with.

. . but . . not one ( out of the 167 viewers ) has commented . ..

The REFERENCE HD 5870 is nothing to sneeze at. it beats all HD 5770's hands down. With the uncertanties regarding how our cMP's will fare after High Sierra many may choose to stay below the High Sierra line ( my own EFI FLASHED Sappire HD 5870 Vapor-X O/C at 5.0 GT/s runs Sierra 10.12.6 but is slow to get to the desktop, does not appear as a "Metal capable card " but it DOES WORK in Sierra.
Getting on a bit BUT still performing and shows EFI at boot.

Last night I managed to boot my R9 270X in EFI to either DVI to DVI or mDP to HDMI with 5.0 GT/s link speed. This is a very simple resistor mod; easy even for those with little soldering experience.

The crux =  Because not even one of the 167 "new viewers & probably HD 5870 owners could bother to comment I cannot see the point in sharing new info with "Gimme a rom " types.

I have decided that from today  I will not be releasing any further 5.0 GT/s mod hints in this or any other forum.

I will be deleting the already mentioned " HD 5870 5.0 GT/s page " on Sunday night ( Japan time ).

I will also be deleting all references/links in Netkas and MacRumors for this mod.

In total  .. Netkas + MacRumors ( similar thread ) there were 167 & 616 new views  in the subsequent 4 day period. . no comments, no thoughts,  etc.

OK, I got it.

=====================

EDITED QUOTE from Rominator  . . .

" I could EITHER  . . . . .

(1 ) give you ONE fish

 . . . . .  or. .  

(2 ) I could TEACH YOU HOW TO FISH.


PS : Despite the "5.0 GT/s  = "Doesn't matter" ! nay sayers"  . . X-Plane 10 under flashed HD R9 270X @ 5.0 GT/s in Mavericks 10.9.5  is yielding better FPS and is noticibly "smoother" in operation.

After all .. Apple DID include "5.0 GT/s" on all official Apple cards . .WHY ?

As always  my respect & admiration for Fl0r!an, Rominator & netkas's tenacity & doggedness.  Netkas in Japan would be classified a a National Treasure.






« Last Edit: September 23, 2017, 08:04:12 AM by SMIKX » Logged

Mac Pro 4,1 upped to 5,1 Dual Quad Core 2.93ghz 17Gb 480Gb SSD TRIM enabled.
HIS HD 7950 3Gb 5.0 GT/s EFI on mDP to DVI + DVI to DVI.
10.9.5 - 10.12.6  - 10.6.8 - Win 7 not Bootcamp. 
AREA 2 port USB 3.1 & Inateck USB 3.0 4 port in OS X 10.9.5.
SMIKX
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« Reply #6 on: August 21, 2017, 10:36:26 AM »

Upon reflection I will leave the HD 5870  & HD 7950 resistor pages/posts up.

More info in post #207 https://forums.macrumors.com/threads/how-to-make-link-speed-2-5gt-s-to-5-0gt-s-on-ati-card-and-nvidia-card.1547340/page-9
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Mac Pro 4,1 upped to 5,1 Dual Quad Core 2.93ghz 17Gb 480Gb SSD TRIM enabled.
HIS HD 7950 3Gb 5.0 GT/s EFI on mDP to DVI + DVI to DVI.
10.9.5 - 10.12.6  - 10.6.8 - Win 7 not Bootcamp. 
AREA 2 port USB 3.1 & Inateck USB 3.0 4 port in OS X 10.9.5.
h9826790
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« Reply #7 on: August 21, 2017, 10:52:50 PM »

Don't know what response you are looking for. Many view on a thread doesn't mean that lots of people have the relevant card to try the mod.

I view this page quite a few times, but I don't have a 5870. In fact, I never own one.

I suspect most viewers are just interested in what's the content in this thread, and to see if it helps to develop the resistor mod on their newer card. If no, then not much can reply / respond / discuss.

We don't mind to say something like "thank you", but what's the point to fill a forum with this kind of post? I think most people just prefer to keep the forum clean, and only post useful response.

I clearly understand that you will keep your secret forever. I respect that.

But I am actually one of those "doesn't matter" guy. I really wonder how much performance improvement you get from this mod.

Do you mean your flashed 270X, under the same OS, same X-plane 10, same cMP (all hardware), clearly give you more FPS after the resistor mod (the only difference is just the resistor mod)? If yes, I wonder why. My R9 280 perform more or less the same after the R17 mod including X-plane. Is that only happen under specific scenery or setting? Do you mind to tell us how many extra FPS (average) you get?

I am nowhere near any expert in how graphic card works, but I suspect that's because the 270X is a 2GB card. For X-plane, it can easily get into VRAM limiting situation. That's actually one of the reason I chose the 7950 but not the 680 (at that moment, I wasn't quite aware that there is a 680 4GB card, and the EFI 680 4GB ROM wasn't there yet). So, because of my 7950  / 280 has enough VRAM. So, it doesn't require to continuously transfer data to/from the card (but just keep everything in the VRAM). However, once you running out of VRAM, then it may need to keep loading data to the VRAM. In this case, the transfer speed suddenly become extremely important.

If this is correct, then the resistor mod is actually more useful on weaker card. e.g. those card that has only 8 lane, or very limiting VRAM, etc. For mid level card, it's virtually completely useless. And for high end card, it may help to release the card's full potential (e.g. the upcoming Vega)
« Last Edit: August 21, 2017, 10:55:40 PM by h9826790 » Logged
Rominator
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« Reply #8 on: September 20, 2017, 07:39:54 AM »

Thanks to the above hint from Rominator, SMIKX and myself were able to find the solder pads on the relatively ancient Sapphire Vapor-X HD5870 that control the PCIe Gen2 5 GT/s Link speed.


As long as someone puts this someplace near their "help" I am cool with stuff like this. BTW, I seem to recall that 5770 was similar.

There was a clown at MR who used to buy my cards and then go post "Here's how the 5.0 speed works" to get street cred.

I spent the HOURS figuring this out, he helped himself to the credit, whole lot easier to find after someone finds it first.

I could show you where on 4870 as well, it was further down, directly below the CF connector about middle of card.

R9 290X was a little tricker and I've only done 3 of them.

If I find time I'll find it on more recent cards, maybe Vega a good place to start?

I'm getting old and feeble. Eyes failing, hands shaking. Maybe time for young whipper snapper?
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