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Radeon 6970 or Dual 7770 (double d)

Last response: in Graphics & Displays
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November 5, 2012 10:24:27 PM

So i have a question here so only serious help.

Current Specs
i7 @ 3.20 GHz
16GB DDR3
Radeon 6970 @ 2GB 256-bit

the only part that is important right now is the graphics card, I have a dual set of the XFX Radeon HD 7770 Double D 1GB 128-bit,

Would the dual set be a dramatic upgrade from the single 6970? or not...

Note: I am not asking about any other card.
a b U Graphics card
November 5, 2012 11:21:53 PM

not really, you see might see performance gains at lower resolutions and settings, but you're choking high resolution and settings
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a c 218 U Graphics card
November 5, 2012 11:22:07 PM

The single HD6970 is probably stronger in most apps/games than the CFed HD7770s.

It has a wider memory bus and a much faster GPU with more processing capability.

What problem are you trying to solve?
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November 5, 2012 11:36:19 PM

Well the thing is I was pushing my computer higher and I got the pair of 7770s for cheap, still in box and packing.

I got my 6970 from newegg and when I went to dual them, there wasnt any, there are a few on amazon, but i somehow stumbled into these two 7770s for only $120 total, the thing is...

the 6970 has 880 MHz 2GB
the 7770 has 1000 MHz 1GB
i assumed 2 of them would be more than 1 of the 6970
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a c 218 U Graphics card
November 5, 2012 11:48:24 PM

Nope. Different architectures. The HD6970 is more capable, especially if you OC it.

Don't get me wrong, CFed 7770s are okay.

Honestly, if you ever have the choice of a stronger single GPU versus dual lesser GPUs, go with the single GPU solution.

What resolution are you gaming at and with how many displays?
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November 6, 2012 12:02:19 AM

I've never OCed my card, the humidity in japan was not really friendly to my computer...

I play on a single display, 40" LED at 1920x1080, but i do plan on getting dual displays soon. The card isnt that old either but when i play a game, lets go ahead and say BF3 on 1980x1080 on Ultra, highest settings, but i do have a frame drop, less that 40, but when i turn the antialising off (i know its normal...) then the frames are smooth.

Should i just get an secondary 6970?
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a c 218 U Graphics card
November 6, 2012 12:51:15 AM

Using 2 HD7770s would introduce micro-stutter (just google it) and would not run BF3 on Ultra as well as the single HD6970. Adding a second HD6970 would also add micro-stutter.

What make/model of motherboard are you using? Same question for your power supply.
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November 6, 2012 1:24:44 AM

Heres all my specs:
- Processor Intel® Core™ i7 930 Processor (4x 3.20GHz/8MB L3 Cache)
- Processor Cooling Liquid CPU Cooling System [SOCKET-1366] - Standard 120mm Fan
- Ram CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9B
- Video Card XFX HD-697A-CNFC Radeon HD 6970 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
-Motherboard [SLI] MSI X58 PRO-E
-Motherboard USB / SATA Interface [Free] Internal USB 3.0 PCI-E 2.0 x1 Expansion Card
- Power Supply Antec High Current Gamer Series HCG-750 750W ATX12V v2.3 / EPS12V v2.91 SLI Certified CrossFire Certified 80 PLUS BRONZE Certified Active PFC Power Supply
- Primary Hard Drive 1 TB HARD DRIVE -- 16M Cache, 7200 RPM, 3.0Gb/s - Single Drives
- Optical Drive 24X Dual Format/Double Layer DVD±R/±RW + CD-R/RW Drive - Black
- Sound Card 3D Premium Surround Sound Onboard
- Network Card Onboard LAN Network (Gb or 10/100)
- Operating System Win7 Ultimate 64x
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a c 218 U Graphics card
November 6, 2012 1:34:36 AM

Since you have 16GB of memory, you aren't running in triple-channel mode. Running either 12GB or 24GB in that mode would increase your system's performance.

I assume you have 4x4GB or 2x8GB or a combination of 2GB and 4GB DIMMs. How is your memory configured?
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November 6, 2012 1:38:50 AM

Quote:
Since you have 16GB of memory, you aren't running in triple-channel mode. Running either 12GB or 24GB in that mode would increase your system's performance.

I assume you have 4x4GB or 2x8GB or a combination of 2GB and 4GB DIMMs. How is your memory configured?


Not sure what you mean on that part I am afraid.... but i edited last post, i pull in my fill system specs.
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a c 218 U Graphics card
November 6, 2012 1:54:06 AM

So, do you have 2 each 4 GB DDR3 memory modules (for a total of 8GB) per the spces you listed or do you have 16GB of DDR3 memory per your original post?

For an X58 motherboard, you have 3 pairs of memory slots for tri-channel configurations. For optimal performance, you installed matched memory in each of the 3 "banks" of memory. The motherboard manual will explain in more detail.

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a b U Graphics card
November 6, 2012 2:02:28 AM

I would avoid a dual card setup since they have scaling issues and a stronger single card is usually better than a dual card setup.
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November 6, 2012 2:04:24 AM

I had to check and correct my last statement, as I stated late. I am running 4 x 4GB and from its fill its places right to left, all 3 black spot are placed and there are the two blue slots unused. When I did a memory check the last time i placed them (incorrectly of course) it read only 12GB, but after a bit of correct placing its reading the entire 16.
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a c 218 U Graphics card
November 6, 2012 12:23:25 PM

Then with 4 DIMMs inserted, you are operating in 2 channel vs. 3 channel mode. The system will actually be faster with 3 DIMMs in the proper slots because it will be in 3 channel mode.
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November 6, 2012 12:42:02 PM

final question.

If i did get this secondary 6970, would there be any way to prevent micro stuttering?
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a b U Graphics card
November 6, 2012 1:01:22 PM

xioteon said:
final question.

If i did get this secondary 6970, would there be any way to prevent micro stuttering?


Not really. If you have a high framerate, Vsync often solves it.

On the other hand, it's a gamble. I have 2 7950s in CF and an Eyefinity setup and have yet to come across microstutter (after 2-3 months of usage). I usually prefer single GPUs to dual GPU solutions but in this case I needed a lot of horsepower and one 7970 would probably not have done the job so, instead of spending an arm and a leg and 2 7970s, I got 2 7950s as it seemed more price efficient. And it was, haven't regretted it at all.
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a c 218 U Graphics card
November 6, 2012 1:58:52 PM

xioteon said:
final question.

If i did get this secondary 6970, would there be any way to prevent micro stuttering?

Prevent, no. Minimize, yes. It is just one of the side effects of synching 2 GPUs. You should also consider, strongly, optimizing your memory config first.
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November 6, 2012 2:14:34 PM

get another 6970 or sell your old 6970 and get a better 7 series card. No reason to get 2 hd7770s..
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