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khoop2112

macrumors newbie
Nov 20, 2016
6
0
The GTX680 does do 4K@60Hz via DP1.2 I am using it on my Philips BDM4065UC 40" monitor. There are some quirks with the GTX680 with 4K monitors.- Even if flashed for an Apple boot screen you will not see one @60Hz but will see one @30Hz. The HDMI only does 4K@30Hz
[doublepost=1479894010][/doublepost]
As the GTX680 does work with DP1.2 to deliver 60Hz@4K I would suspect that the DP-HDMI adapter is the problem.

I have the same monitor - 5770 works just fine with it at 2560x1440 @ 60hz, but 4k @ 30 hz. My GTX780 works just fine with the adapter (4k @ 60hz) on a 4k HDMI 2.0 TV. 5770 doesn't work at all with the adapter. The 680 worked only at 24hz at higher resolutions. I totally believe that the 680 would have driven my 4065 monitor via DP only, but since that wasn't my goal, I didn't test it. Also, my 680 was an unflashed 680 "Classified" version. Not sure if that would make a difference.
[doublepost=1479914733][/doublepost]

The adapter that I got was made by Club3D, and successfully works 4k @ 60hz using my GTX780. The problem I'm having with all this is that my 5770 is outperforming my GTX780 with Pro Tools. I ran a Cinebench R15 test, and the 5770 scored higher than my MacVidCards flashed 780, which makes no sense to me.
 

ActionableMango

macrumors G3
Sep 21, 2010
9,612
6,907
The info on the link above is wrong. Every GTX 680 has DisplayPort 1.2: http://www.geforce.co.uk/hardware/desktop-gpus/geforce-gtx-680/specifications
Quote: 4 - 3840x2160 at 30Hz or 4096x2160 at 24Hz supported over HDMI. 4096x2160 (including 3840x2160) at 60Hz supported over Displayport. Support for 4k tiled MST displays requires 326.19 driver or later.

I had to activate DP 1.2 on my 4K monitor (Asus PP279Q), but yes, the card is capable of 4K/60 Hz.

My GTX 680 eGPU @ 4K/60 Hz: https://forums.macrumors.com/threads/mac-mini-4k-tv.1644192/page-3#post-23656730

Is yours Mac flashed? Because in addition to the spec on that website, I had to set the Dell monitor to DP1.1 to get it to work at all. It wouldn't work with my 680 when set to DP1.2.

I have no other explanation, unless there are DP1.1 specific cables and that's what I had.
 

Synchro3

macrumors 68000
Jan 12, 2014
1,987
850
Is yours Mac flashed? Because in addition to the spec on that website, I had to set the Dell monitor to DP1.1 to get it to work at all. It wouldn't work with my 680 when set to DP1.2.

I have no other explanation, unless there are DP1.1 specific cables and that's what I had.

No, it's not flashed, it's an original 'Mac Edition' GTX 680 2GB card. I can definitely confirm that the info about DP 1.1 on the EVGA site is wrong.

EVGA GTX 680 MAc Edition.png

I made sure that I bought DP 1.2 cables. And I had to activate DP 1.2 on my Asus PB279Q monitor (default was DP 1.1).
 
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7Seas

macrumors newbie
Jul 17, 2015
17
2
Hands down GTX 680. Reliable, no drivers needed, has boot screens and is quick enough.
I honestly can't hear mine when on unless I run a benchmark such as Unigine Heaven.

I can't get a new GTX 680, it was the first thing I looked at.

Monitor size has nothing to do with the GPU power right? It's all about resolution, but not size.

Anyway, the 460 cannot drive a 1080P monitor smoothly? You mean 3D gaming? Even a GT120 can drive a 1440P monitor without any issue (normal OS environment). It's hard to believe that the 460 can't handle this simple job.

Honestly I don't know why, if it has to do with Metal or how Pro Tools calculates waveforms in the newer versions.
This does not happen in Mountain Lion and PT 10. Though I cannot record at low buffer sizes in PT 10 as I can with PT 12 with the new GPU.
I am now testing a RX 480 and it seems to work well.
My only problem is getting the RX 480 to work in Mountain Lion for compatibility reasons with PT 10, that some clients still require. Using both 5770 and RX 480 is not possible because I need the PCIe slots.
Maybe if I copy the alteres 4100 kext to mountain lion?? Any suggestions??
 

orph

macrumors 68000
Dec 12, 2005
1,884
393
UK
i mentioned it on the first page of this topic, i cant use any RX 4xx because of software (thanks adobe).
 

Porco

macrumors 68040
Mar 28, 2005
3,314
6,908
Can I ask some stupid questions? The graphics card thing has always given me a headache, even when I think I understand it, it wriggles out my brain like some slippery worm :D

My current set-up: Mac Pro 2010 5,1 Quad 2.8GHz(stock), ATI Radeon HD 5770(stock), 16GB RAM, SM951 in a Lycom adapter(slot3), Inateck KT4004 USB 3.0 card(slot 4).

1) I don't really game on my mac much so that's not a big deal, and I like the sound of the Gigabyte RX460. I am also thinking I might finally get around to adding more RAM and upgrading my CPU to the W3680 soon, and wonder about any extra power and heat, especially as I use an SM951 as my boot drive. Am I right in saying the RX460 should produce lower heat and consume less power than my stock ATI Radeon HD 5770?

2) I currently run two displays: an LG Ultrawide (2560x1080) and a 'normal' LG (1920x1080). I would assume they will run fine on the RX460(?) but would I have the potential for running a 4K display at 30Hz and/or 60Hz from it in the future (either in addition to or instead of one of the existing displays)?

3) Also, just to confirm I know what I'd be losing, when people say 'no boot screen' is it what Apple call the 'Startup Manager', i.e. you hold down option when you restart to pick which disk you boot from?

4) Is there any difference between the 2GB or 4GB RX460 other than the obvious (2GB more!)? The prices don't seem very far apart so I'd probably just go for the 4GB unless there's any reason not to...?

Thanks for any replies or advice.
 

h9826790

macrumors P6
Apr 3, 2014
16,611
8,537
Hong Kong
Can I ask some stupid questions? The graphics card thing has always given me a headache, even when I think I understand it, it wriggles out my brain like some slippery worm :D

My current set-up: Mac Pro 2010 5,1 Quad 2.8GHz(stock), ATI Radeon HD 5770(stock), 16GB RAM, SM951 in a Lycom adapter(slot3), Inateck KT4004 USB 3.0 card(slot 4).

1) I don't really game on my mac much so that's not a big deal, and I like the sound of the Gigabyte RX460. I am also thinking I might finally get around to adding more RAM and upgrading my CPU to the W3680 soon, and wonder about any extra power and heat, especially as I use an SM951 as my boot drive. Am I right in saying the RX460 should produce lower heat and consume less power than my stock ATI Radeon HD 5770?

2) I currently run two displays: an LG Ultrawide (2560x1080) and a 'normal' LG (1920x1080). I would assume they will run fine on the RX460(?) but would I have the potential for running a 4K display at 30Hz and/or 60Hz from it in the future (either in addition to or instead of one of the existing displays)?

3) Also, just to confirm I know what I'd be losing, when people say 'no boot screen' is it what Apple call the 'Startup Manager', i.e. you hold down option when you restart to pick which disk you boot from?

4) Is there any difference between the 2GB or 4GB RX460 other than the obvious (2GB more!)? The prices don't seem very far apart so I'd probably just go for the 4GB unless there's any reason not to...?

Thanks for any replies or advice.

1) don't know what you mean "I like the sound". But 460 use less power and generate less heat is true.

2) the 460 can run 4K 60Hz via the display port.

3) yes, but not 100%, AFAIK, single user mode also need "boot screen", otherwise you can only type in blind.

4) my understanding is "just more VRAM".
 
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Porco

macrumors 68040
Mar 28, 2005
3,314
6,908
1) don't know what you mean "I like the sound".

By "I like the sound of it" I just mean that 'from what I have heard and read I think the Gigabyte RX460 would be a good choice for me'.

Thanks for your answers :)
 

orph

macrumors 68000
Dec 12, 2005
1,884
393
UK
you only need more vram if you do tasks that use a lot of vram, id gess 2GB is fine for normal use.
you do need to run osx10.12 for the RX460
 
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Porco

macrumors 68040
Mar 28, 2005
3,314
6,908
you only need more vram if you do tasks that use a lot of vram, id gess 2GB is fine for normal use.
you do need to run osx10.12 for the RX460

Thanks.

Yeah, I'm sure I'd be fine for now with the 2GB, but there isn't much price difference from what I've seen, so I might just go for the 4GB anyway in case I wish I had later (it's certainly possible I could use the extra).

Yep, I'm already on 10.12 (begrudgingly, preferred Mavericks... but nevermind)
 

js2704

macrumors member
Original poster
May 20, 2015
39
11
Hi, OP here. Just to update, thanks for the advice. I went with the 460 and pretty pleased with it; the only momentary confusion was spending 5 minutes looking for the 6 pin slot only to realise eventually that there wasn't one! So it's usefully quicker than the 5770 and uses less power - result.

All in all, for 100 or so GBP I'd recommend it as an effortless upgrade.
I went with the Gigabyte 4GB version, incidentally.
 

orph

macrumors 68000
Dec 12, 2005
1,884
393
UK
hay relay happy it worked for you ^^ for normal use i think that's the hot card at the mo
 

MarkC426

macrumors 68040
May 14, 2008
3,512
1,957
UK
hay relay happy it worked for you ^^ for normal use i think that's the hot card at the mo

Reading all this chatter about the rx460.
Quick question, I currently have 2 5770 in a 5.1 quad.
1. Could I add a 2gb card (no 6 pin) as a third gpu?
2. Or could I replace one 5770 with 4gb card (6 pin required) to maintain boot screen from 2nd 5770.

Thanks
 

h9826790

macrumors P6
Apr 3, 2014
16,611
8,537
Hong Kong
Reading all this chatter about the rx460.
Quick question, I currently have 2 5770 in a 5.1 quad.
1. Could I add a 2gb card (no 6 pin) as a third gpu?
2. Or could I replace one 5770 with 4gb card (6 pin required) to maintain boot screen from 2nd 5770.

Thanks

It's possible to just put an extra RX460 in the 4th slot, but you'll need a single slot card like the one.

http://www.hisdigital.com/un/product2-940.shtml

Didn't heard anyone use this card yet. So, no guarantee it can work as good as the Gigabyte card. Anyway, my HIS R9 280 works good in my 4,1. So, I assume this card should work as expected.
 

MarkC426

macrumors 68040
May 14, 2008
3,512
1,957
UK
It's possible to just put an extra RX460 in the 4th slot, but you'll need a single slot card like the one.

http://www.hisdigital.com/un/product2-940.shtml

Didn't heard anyone use this card yet. So, no guarantee it can work as good as the Gigabyte card. Anyway, my HIS R9 280 works good in my 4,1. So, I assume this card should work as expected.

Don't particularly need a third card, just curious.
With one 5770 and one rx460, would there be any conflicts or issues that are known?
 

yurc

macrumors 6502a
Aug 12, 2016
833
1,011
inside your DSDT
Just question, is Radeon 460 mentioned in this thread actually same with 460 used touchbar Macbook? Is they have same DeviceID? Just to clarify.
 

js2704

macrumors member
Original poster
May 20, 2015
39
11
Reading all this chatter about the rx460.
Quick question, I currently have 2 5770 in a 5.1 quad.
1. Could I add a 2gb card (no 6 pin) as a third gpu?
2. Or could I replace one 5770 with 4gb card (6 pin required) to maintain boot screen from 2nd 5770.

Thanks

Hi, OP here - just so you know, I bought the 4gb Gigabyte rx460 and it doesn't need a 6 pin.

No idea on the third graphics card plan though; others may have a view
 

orph

macrumors 68000
Dec 12, 2005
1,884
393
UK
i dont know why you even want 3 GPU's?
and not even matching ones, 10 displays?

id gess you can plug in 3 but unless your using a pro app that can use 3 then there just going to sit there making heat and useing power for no gain
and if your using pro apps un matched low power gpus are not ideal
but to drive a lot of displays i gess it will work
 

pat500000

Suspended
Jun 3, 2015
8,523
7,515
The GTX680 does do 4K@60Hz via DP1.2 I am using it on my Philips BDM4065UC 40" monitor. There are some quirks with the GTX680 with 4K monitors.- Even if flashed for an Apple boot screen you will not see one @60Hz but will see one @30Hz. The HDMI only does 4K@30Hz
[doublepost=1479894010][/doublepost]
As the GTX680 does work with DP1.2 to deliver 60Hz@4K I would suspect that the DP-HDMI adapter is the problem.
I'm curious..how common is it to find monitor that supports 1.2 dp? I'm not familiar with various monitors.
 
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