Powercolor HD5970 Bottleneck
Page 1 of 1
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Wed, 6th Jan 2010 15:22    Post subject: Powercolor HD5970 Bottleneck
I just made a great deal buying an HD5970 from a guy that works at powercolor for 380€ Smile

But now I think I´ll have a huge bottleneck, I have an E8400 @ 3.6GHZ.

What you guys think?

I have a 4870 now by the way...

Will I notice a big difference in performance, or I´m just too limited by the processor?
Back to top
LeoNatan
☢ NFOHump Despot ☢



Posts: 73269
Location: Ramat HaSharon, Israel 🇮🇱
PostPosted: Wed, 6th Jan 2010 15:30    Post subject:
Actually, I don't really think you are that limited by your CPU, especially for games. Maybe for GTA4, which seems to be looking for the cure of cancer and cracking the atom at the same time while you play, but for most stuff you should be fine. Perhaps in the future you could add an i5 or i7 with a PCIe 2.0 motherboard, but you should definitely see a sizable improvement. Smile


NOT FLAT ENOUGH.

My IMDb Ratings | Fix NFOHump Cookies | Hide Users / Threads | Embedded Content (Videos/GIFs/Twitter/Reddit) | The Derps Collection

Death smiles at us all; all we can do is smile back.
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Wed, 6th Jan 2010 16:13    Post subject:
CPU bottleneck is highly overexaggerated, really.

Any C2D or Phenom at 2.4 GHz or up is enough to run most games, provided that you game at 1080p or better. Obviously, there are some exceptions:
- GTA IV, because it's simply a big piece of shit Razz
- Source games: Very CPU dependent engine, but an E8400 is more than plenty for this

I've got an E8400 at stock (3.0 GHz) and went from 9800GTX to 5870. At the very least, it has doubled my FPS in every single game bar GTA and L4D2. Some games have seen an even bigger increase, Crysis for example. And even though the latter isn't the most optimised game either, it does demand a lot of graphical power before it starts raping your CPU.

My results are right on par with every 5870 benchmark out there Smile

There's 2 articles about this whole thing, one is this one. I'll try to find the other one for you, which was much more recent; had like 4 different CPU's at various clockspeeds with a 5970 or 2x5870 (can't remember).
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Wed, 6th Jan 2010 16:29    Post subject:
Right so quickly did a search on a Dutch forum I hang around on a lot (Tweakers.net). Although it's not our E8400, these results show enough already.

i7-920 @ 2.8GHz + 2x5870: http://www.plaatjesupload.nl/bekijk/2009/11/25/1259155903-320.jpg
i7-920 @ 4.0GHz + 2x5870: http://www.plaatjesupload.nl/bekijk/2009/11/25/1259156050-950.jpg


And here's another one: http://www.legionhardware.com/document.php?id=869&p=0

Although it's quad cores on display again, the advantage isn't exactly noteworthy, considering the fact that there's barely any games that take advantage of more than 2 cores Smile

As long as it's a graphically demanding game, you'll be fine if you run it at high settings on a proper resolution!
Back to top
sabin1981
Mostly Cursed



Posts: 87805

PostPosted: Wed, 6th Jan 2010 18:41    Post subject: Re: Powercolor HD5970 Bottleneck
SuTuRa wrote:
I just made a great deal buying an HD5970 from a guy that works at powercolor for 380€ Smile


You are one lucky son of a bitch. I hate and envy you.
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Wed, 6th Jan 2010 18:56    Post subject:
It seems I´ll have a huge bottleneck!

 Spoiler:
 


My native resolution is 1680x1050! Only in extreme resolutions there´s litttle or no difference between the cpus.

Crap, I don´t want to buy a new processor Evil or Very Mad

More games here:

http://www.tomshardware.com/reviews/build-balanced-platform,2469-8.html
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Wed, 6th Jan 2010 19:41    Post subject:
Yeah on 1680x1050 you're really not gonna see much of that graphics card Razz

Hate you for getting it that cheap btw, my 5870 set me back 300 Neutral
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Wed, 6th Jan 2010 19:50    Post subject:
But there´s still a good difference between the 4850 and 4870x2!

I should see a very noticable increase in performance.
Back to top
LeoNatan
☢ NFOHump Despot ☢



Posts: 73269
Location: Ramat HaSharon, Israel 🇮🇱
PostPosted: Wed, 6th Jan 2010 19:54    Post subject:
Also Crysis is not the friendliest game of the bunch when it comes to multi-GPU solutions... Sad Nowhere near 2x (or 1.5x) performance increase...


NOT FLAT ENOUGH.

My IMDb Ratings | Fix NFOHump Cookies | Hide Users / Threads | Embedded Content (Videos/GIFs/Twitter/Reddit) | The Derps Collection

Death smiles at us all; all we can do is smile back.
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Wed, 6th Jan 2010 20:39    Post subject:
Here's hoping that Hydra can improve on that a little bit :<
Back to top
LeoNatan
☢ NFOHump Despot ☢



Posts: 73269
Location: Ramat HaSharon, Israel 🇮🇱
PostPosted: Wed, 6th Jan 2010 21:16    Post subject:
Have they even announced a motherboard with Hydra for LGA1366 systems?


NOT FLAT ENOUGH.

My IMDb Ratings | Fix NFOHump Cookies | Hide Users / Threads | Embedded Content (Videos/GIFs/Twitter/Reddit) | The Derps Collection

Death smiles at us all; all we can do is smile back.
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Wed, 6th Jan 2010 22:00    Post subject:
Nope, not yet. MSI are planning to though, assuming the Fuzion does well (or at least as well as can be expected for a stupidly high-end product).
Back to top
Sin317
Banned



Posts: 24321
Location: Geneva
PostPosted: Wed, 6th Jan 2010 22:15    Post subject:
Of course the CPU bottlenecks the GPU, this has been true for quite some time now. CPU is directly limiting your gpus max. performance. Upgrade your CPU and everything else will follow right away ...


Last edited by Sin317 on Thu, 7th Jan 2010 02:00; edited 1 time in total
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Wed, 6th Jan 2010 23:11    Post subject:
Sin317 wrote:
Of course the COU bottlenecks the GPU, this has been true for quite some time now. CPU is directly limiting your gpus max. performance. Upgrade your CPU and everything else will follow right away ...

Only at low resolutions + in GTA 4 Wink
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Thu, 7th Jan 2010 01:51    Post subject: Re: Powercolor HD5970 Bottleneck
sabin1981 wrote:
SuTuRa wrote:
I just made a great deal buying an HD5970 from a guy that works at powercolor for 380€ Smile


You are one lucky son of a bitch. I hate and envy you.


He´s now selling a 5870 for 250€ Wink
Back to top
Sin317
Banned



Posts: 24321
Location: Geneva
PostPosted: Thu, 7th Jan 2010 02:04    Post subject:
pwerelds wrote:
Sin317 wrote:
Of course the COU bottlenecks the GPU, this has been true for quite some time now. CPU is directly limiting your gpus max. performance. Upgrade your CPU and everything else will follow right away ...

Only at low resolutions + in GTA 4 Wink


not sure what (low) resolution has to do with it but anyways.

When i say obviously, i mean OBVIOUSLY. In obvious cases. Sure you won't notice much in current games etc with his Dual Core setup. On the other hand, i just upgraded myself, still having my old 9600GT SLi setup on a new Mobo/CPU/Ram setup (from a e6320 to a i7 920) and i can tell you, the shit is faster now. Have to do some proper 3dmark tests etc, but it show quite a difference (even if it comes from cpu part obviously).

Don't forget, that a lot of things are still cpu calculated in games (explosions etc).
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Thu, 7th Jan 2010 10:41    Post subject:
Sin317 wrote:
not sure what (low) resolution has to do with it but anyways.

In low resolutionsl graphics card will be more or less idle, that's why you should always use the highest resolution possible. At lower resolutions the graphics card has nothing to do, and as such it is only limited by the amount of frames the CPU can send to it. 5870 with a P4 2GHz will most likely have better, or at the very least more stable framerates at 2560 than it will at 1280.

Sin317 wrote:
Have to do some proper 3dmark tests etc, but it show quite a difference (even if it comes from cpu part obviously).

3DMark are far from proper tests, they put a much higher load on your system than any game ever will (bar Crysis and GTA4). Try using Heaven or any game (Stalker:COP for example) for comparison.

Sin317 wrote:
Don't forget, that a lot of things are still cpu calculated in games (explosions etc).

Not really, only the physics associated with those explosions.

You've got the wrong idea about all of this. With the obvious exceptions aside, any dual core CPU made in the last two years will spend half the time idle when gaming. The very newest games are starting to make use of your system like Crysis. In that regard, Crysis is quite unique.
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Thu, 7th Jan 2010 15:55    Post subject:
The card has arrived, but now I have to buy a new power supply.

God damn it!

My LC Power 600W wont do the job, it says on the box 650W minimal.
Besides, it doesn't have the 8 pin connector needed for this card.

And I almost had to buy a new case! The card fits in mine without 1mm of free space in the end. Its a cooler master c-690, which has a considerable size.

Oh well... Time to go to the store...
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Thu, 7th Jan 2010 16:45    Post subject:
SuTuRa wrote:
The card has arrived, but now I have to buy a new power supply.

God damn it!

My LC Power 600W wont do the job, it says on the box 650W minimal.
Besides, it doesn't have the 8 pin connector needed for this card.

And I almost had to buy a new case! The card fits in mine without 1mm of free space in the end. Its a cooler master c-690, which has a considerable size.

Oh well... Time to go to the store...

The 650W is nonsense. 600W is more than plenty.
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Thu, 7th Jan 2010 17:25    Post subject:
I wanted to try with my 600w power suply, but it doesn't have the 8 pin connector.

I bought an Antec 750w! I thought about the possibility of buying the connector but it wouldn't have the proper voltage.
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Thu, 7th Jan 2010 19:26    Post subject:
Yeah, the 5970 is probably the only card which might actually need the 8-pin connector. Shame about your old PSU though Smile
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Thu, 7th Jan 2010 20:02    Post subject:
Ok, I was about tp install my new PSU and found that my old PSU has the 8 pin connector Embarassed

I connected with the old PSU cuz I can return the one I bought today.

But now I´m not sure if it´s receiving enough power. Is there any way to know that?

I tried crysis and it´s very fluid with 8xAA, but at some point started to appear a lot of little squares on screen. Could this be a sign of low power?

EDIT: Ok, it wasn´t a power problem. I had to disable A.I. in control center.
But I would still like to know if there´s some way of knowing if the card is receiving enough power.
Back to top
Werelds
Special Little Man



Posts: 15098
Location: 0100111001001100
PostPosted: Thu, 7th Jan 2010 20:22    Post subject:
SuTuRa wrote:
EDIT: Ok, it wasn´t a power problem. I had to disable A.I. in control center.
But I would still like to know if there´s some way of knowing if the card is receiving enough power.

Assuming your PSU is a decent one, there's no way you'll be getting into trouble.

From memory, the 5970 peaks at 215ish watts under load, with a theoretical maximum of 300W (PCI-E spec). Given that, unless you have a crapload of hard disks in your PC and you've overclocked like mad, you'll be sitting around 400-450 watts under load.

Is your PSU 80-plus certified? Should have a big sticker on it if it is Smile
Back to top
SuTuRa




Posts: 2445
Location: NFOHump
PostPosted: Thu, 7th Jan 2010 20:40    Post subject:
Can´t tell... And I´m too lazy to go to the attic and see the box Very Happy

It´s a LC Power 600W silent series.

Finally I see clear sky playing smooth with DX10.1 and AA! Hooray Very Happy
Back to top
SpykeZ




Posts: 23710

PostPosted: Fri, 8th Jan 2010 04:48    Post subject:
watts don't matter AS much as the amps.


Back to top
Page 1 of 1 All times are GMT + 1 Hour
NFOHump.com Forum Index - Hardware Zone
Signature/Avatar nuking: none (can be changed in your profile)  


Display posts from previous:   

Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB 2.0.8 © 2001, 2002 phpBB Group