Topic Title: Question about my graphics card
Topic Summary: Will adding an additional HD4870x2 to my existing HD4870x2 improve performance?
Created On: 12/04/2013 06:16 PM
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 12/04/2013 06:16 PM
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bonza32
Peon

Posts: 3
Joined: 12/04/2013

Greetings!

I play Planetside2 and built this computer just so I could do so...however, I found the APU's graphics were a bit disappointing, so I installed my old HD4870x2 dual GPU card, set it up in AFR Crossfire, and the situation improved considerably to a steady 35 to 40 FPS.

However, I noticed that the ingame FPS monitor consistently showed my system being bottlenecked by the GPU, so I checked things out using AMD's System Monitor on REC...it showed that the processor utilization was ~30%, while the two GPU's were both maxed at 100% while I was playing.

I asked around on another forum if adding a additional HD4870x2 might be a cheap performance improver...certainly cheaper then tossing what I had and buy a R9-290...but the opinion that I received was that my processor couldn't "push" two cards in Crossfire...which sort of left me scratching my head...if one Crossfired HD4870x2 is only using ~30% of my processor running both GPU's 100%.

Yes, I know if I had a bottomless wallet, the R9-290 would run circles around my old HD4870x2...but my question is would adding a additional HD4870x2 improve my current performance?

My specs are:

MSI FM2-A85XA-G65 motherboard

32Gig Corsair Vengeance DDR3 1866MHZ

AMD A10-5800K Trinity Quad core Black Edition OC'd 4.2Ghz

Rosewill Xtreme Series 750w 80 PLUS Certified PSU

ATI HD4870x2 2GB DDR5 Dual core Crossfired

NZXT Guardian SECC ATX Case

Seagate Barracuda 2TB 7200RPM SATA 3 HDD

Lite On Super 24x SATA 3 DVD+/-RW Dual layer CD Disk drive

Cooler Master TX3 w/dual fans + Gelid GC Xtreme Thermal compound

Win7 x64 Pro SP1

 12/04/2013 06:43 PM
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neo5555
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I believe adding an extra 4870x2 would make your system a Quad- Crossfire system..  Once you go above a dual crossfire config the gains are minimal..  My opinion is that you would be wasting your time..  CPU usage is not a true indication of a CPU's ability to "feed" your GPU.  I would agree that your GPU would be a bottleneck with newer games, but i doubt very much adding an extra one would help enough to justify spending the money..

The resolution which you play at also plays a major role with bottlenecking...  



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Pics of my rig
i7 4770k, custom water cooling, 8Gig Corsair Dom 2133 9-11-10-27, ASrock Z87 OC Formula, SilverStone ST-1500 PSU, Creative X-Fi Platinum, Logitech Z-5500D , 2xHIS 7970 CF, Asus VW246H Monitor, Win 7 64Bit HP, Corsair 800D Case

 12/04/2013 06:49 PM
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black_zion
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I would say no. The HD 4000 series didn't scale quite as well as modern cards do, and as neo said once you go above 2 GPUs it's more about consistency gains than performance gains. I would suggest going with a R9 280x (otherwise known as the HD 7970 Ghz Edition). Your processor is fine if you don't game at below 1920x1080.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 12/04/2013 09:00 PM
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bonza32
Peon

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Joined: 12/04/2013

I use a resolution of 1920x1080, as that is the native resolution of my Samsung S24B300 monitor.

Unfortunately, my funds are limited and buying a more expensive (or any!) card right now is a "no go".

Can anything be done to further improve the performance of this card?  Can it be over-clocked or tweaked in any other manner then what is available in the current legacy CCC?

 12/04/2013 09:07 PM
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black_zion
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You could overclock it (though I would suggest using MSI Afterburner to do it so you can set a custom fan speed profile), but I wouldn't suggest adding a second 4870x2. Besides being legacy, x8/x8 PCIe 2.0 with dual GPU cards is a no no. The 4870x2 had quite a bit of performance 4 years ago, but games have really started demanding more horsepower since then.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 12/05/2013 03:48 AM
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neo5555
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Originally posted by: bonza32  

 

Unfortunately, my funds are limited and buying a more expensive (or any!) card right now is a "no go".

 

So, if you are not spending any money are we to assume that you are getting the second 4870x2 for free ?   If so go ahead...  nothing to loose..

Otherwise, if you were to pay for the second 4870x2, i would advise to save that money, sell your existing 4870x2 and put a little extra toward something more recent..   perhaps a used/second hand 6970 which performs better than a single 4870x2..



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Pics of my rig
i7 4770k, custom water cooling, 8Gig Corsair Dom 2133 9-11-10-27, ASrock Z87 OC Formula, SilverStone ST-1500 PSU, Creative X-Fi Platinum, Logitech Z-5500D , 2xHIS 7970 CF, Asus VW246H Monitor, Win 7 64Bit HP, Corsair 800D Case

 12/05/2013 05:26 AM
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bonza32
Peon

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Joined: 12/04/2013

I installed MSI Afterburner and raised my settings about 10%...which gave me about 15 to 20% higher FPS...I was quite impressed!

I had been depending upon the chart I found at http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html to compare cards...as the recommendation states a minimum of three tiers higher for a real "noticeable" improvement, that was putting me up with the R9-290 @ ~$400...just not do-able for me right now...while I found another HD4870x2 for about ~$125 @ http://www.amazon.com/Radeon-PCI-Express-Graphics-Extended-Bracket/dp/B0068OHBYU/ref=sr_1_1?ie=UTF8&qid=1386238093&sr=8-1&keywords=hd4870x2, which I could probably eek out.

Oddly enough, according to this chart the HD4870x2 and the HD6970 are quite comparatable...while the HD6970 is running ~$170 @ http://www.amazon.com/Sapphire-DL-DVI-I-SL-DVI-D-PCI-Express-100311SR/dp/B004FPYJF8/ref=sr_1_4?s=pc&ie=UTF8&qid=1386238432&sr=1-4&keywords=HD6970

 

I'm curious as to why you think the HD6970 is the better card...aside from it being newer....ah, I see...Quote:  "Its core clock speed of 880MHz, together with a dedicated high speed interface to 2GB of GDDR5 memory running at 1375MHz (5.5Gb/s effective) delivers the highest performance in this series."

Even with Afterburner, the 4870x2 is running at 780 core clock and 950 memory clock w/1GB memory per GPU...quite a difference for ~$50 more...

I'll have to think about that...thank you for pointing this out!

 12/05/2013 01:33 PM
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neo5555
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Check this out   http://www.overclockers.com/forums/showthread.php?t=684245



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Pics of my rig
i7 4770k, custom water cooling, 8Gig Corsair Dom 2133 9-11-10-27, ASrock Z87 OC Formula, SilverStone ST-1500 PSU, Creative X-Fi Platinum, Logitech Z-5500D , 2xHIS 7970 CF, Asus VW246H Monitor, Win 7 64Bit HP, Corsair 800D Case

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