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OCing processor and should I XFIRE help

post #1 of 5
Thread Starter 
CPU: i5-4670k (no OC yet, need help with this)
CPU COOLER: Cooler Master 212+ with AS5 (used the straight line method in the middle, placed cooler, and tightened)
MOBO: BIOSTAR Hi-Fi Z87X 3D LGA 1150 Intel Z87 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
RAM: G Skill Ripjaws X 2133mhz (set XMP Profile 1 in Bios, working fine)
Case: Antec 902
GPU: MSI 7950 TWIN FROZR 3GB (OC SET TO 1100/1500, stock voltage)

I never have xfire or SLI before. I have always been a budget gamer, but now I have a real job, I like to open the wallet a bit more.

I would like to xfire if it will compete with the new 9 series coming out at the right price? What cards can xfire with my Twin Frozr? Should I wait till Black Friday? I am getting pretty excellent performance on 2560x1440 110hz with the card (CSGO and Torchlight 2).

Thank you,
Chris
post #2 of 5
You can crossfire any other HD 7950 as long as it is a 3Gb card. If you don't plan on manually adjusting the clocks (gpu driver at stock) be advised that both cards will run at the speed of slowest card.

However, this can be overcome by using an overclocking utility and linking the clock speeds of both cards. Then you can set whatever core and memory speeds you would like (as long as they are stable of course).

Two 7950s in crossfire will be powerful.

As far as waiting for Black Friday........... well that's totally up to you.
wevs rig
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i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
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wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
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Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by wevsspot View Post

You can crossfire any other HD 7950 as long as it is a 3Gb card. If you don't plan on manually adjusting the clocks (gpu driver at stock) be advised that both cards will run at the speed of slowest card.

However, this can be overcome by using an overclocking utility and linking the clock speeds of both cards. Then you can set whatever core and memory speeds you would like (as long as they are stable of course).

Two 7950s in crossfire will be powerful.

As far as waiting for Black Friday........... well that's totally up to you.

I have heard though that XFIRE and SLI sometimes cause more problems and aren't that big of a performance gain. Will it be a noticeable performance gain with 2 x 7950 or do I just upgrade to a single card solution for gaming?
post #4 of 5
You're going to get a ton of argument on that one. Many people will say upgrade to the single best card you can afford. The way I see it; if you already have one great card and want to improve on that, then buy another and crossfire or SLi them.

I've been using dual gpu solutions since 4850s and have for the most part been completely happy with two mid-range cards versus one mega expensive top end card.

I've had zero problems with SLi, and when I was running older generation ATi cards crossfire was working well for me then too. I've read many posts from folks running crossfire since AMD released the frame pacing fix within the last month and apparently even the latest generation of AMD cards is working great in crossfire now too.

Scaling depends a lot on the cards and on the titles you're playing, but the short answer is that crossfire or SLi can bring some significant performance gains depending on the variables.

If I had a single 7950 and felt I wanted to go over the top on performance, I wouldn't hesitate to add the second 7950.
Edited by wevsspot - 9/17/13 at 11:13am
wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
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wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
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post #5 of 5
Scaling is excellent on both sides on two cards, three cards are a bit more funky, and four cards can sometimes cause negative scaling.
I've been sitting on two 6970's for quite some time now, and I will say, the frame-pacing driver REALLY made wonders. Battlefield 3 is now so smooth for me even on ultra that I prefer my 6970's over my brothers single 680. Unfortunately, it's currently only for DX10/11 games, and up to 2560*1600. No eyefinity yet. The drivers are still in their beta-phase, so expect to disable crossfire for certain games, for instance Skyrim, League of Legends, Burnout, etc (none of them actually need a second card to run maxed out anyways rolleyes.gif) Easiest way is to make a custom application profile, rather than disabling xfire completely, like one of my friends did every time he switched between games. It might also be worth mentioning that sometimes multi-gpu setups may cause some issues with games on release, but those are usually smoothed out very fast. But the fix is on it's way, and if I were to guess, we will see some updates with the reveal or release of Hawaii.
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