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  • August 30th, 2011, 10:06 PM
    That's what I wanted to do, I'll just wait and see ... Maybe it will be enough ...
  • August 30th, 2011, 09:41 PM
    I'd just wait and see how the 6870x2 will perform and see if you really even NEED to add another card. I have a feeling you won't though, or just adding a 3rd 6870 at the most.
  • August 30th, 2011, 04:19 PM
    Thank you for the answers and sorry for a late reply.

    I have decided to go for one 6870x2 and in a months time I will be able to get a single 6870 and cross-fire both. Unless for a similar price, I'll be able to cross-fire 2 6950's, do you think that will be any better?

    As for Nvidia cards, it's not "just because", I have found Nvidia cards better for gaming, although very poor for video and audio decoding, especially when you have to purchase seperate drivers/software. As I always preffered AMD over the fact their prices were great and the hardware never failed me, I was always choosing ATI cars for greater compatibility. As you may know, Nvidia and AMD will work together perfectly, although AMD with Radeon cars will work even better. But as I mentioned before, those reasons may be stupid, depending on what other people think.

    I've also seen a 6970x2 by PowerColor ... It has better specs than a 6990 ... What the heck :O I'll have to look into that, I can't find anywhere to buy it ... Maybe I should hold on with buying anything at the moment ... and wait for that ... Unless you guys know where to get this baby!?
    // EDIT
    Haha, I just called PowerColor, they said they are waiting for more info to be released about that card, so never mind this one ... It would be awesome though ...
    // EDIT

    Thanks again
  • August 26th, 2011, 12:58 PM
    I'd either get a 6950 and do some slight overclocking, or a 6970 if you aren't into that. Performance will be equal or better than a 4870x2, plus you'll get the DX11 you want and a quieter, cooler card.

    Down the road if you need more power you could crossfire one of those.

    here's a quick comparison I did with the 4870x2 and a 6950 stock and overclocked:

    also, THG did an interesting test about micro stuttering here, which did include comparisons on the 6870x2 and even crossfired 6870's:

    Micro-Stuttering And GPU Scaling In CrossFire And SLI : Micro-Stuttering, Multi-Card Scaling, And More!

    Either way, good luck.
  • August 26th, 2011, 05:35 AM
    Witcher 2 and Mafia 2 should easily run maxed out even on a 4870x2. Especially if Crysis 2 is able to which is a more taxing game.

    Sounds like it could be some sort of Driver issues with AMD drivers (which isn't surprising. AMD updates the drivers far less frequently for games and software than Nvidia does for their cards)

    Your Motherboard has multiple Slots for PCIe x16 slots, and its crossfire capable, your CPU is fast enough to not be a bottleneck, and the PSU is far more than you'd ever need.

    With that info, I'd say grab a couple 6950's in Crossfire.

    For cheaper route, the 6870x2 will be more powerful than the single 6970 or 6950.

    As to Nvidia, no offense, but it is kind of stupid to not like them "just because".

    There's nothing wrong with Nvidia at all, in fact like I mentioned they tend to be a bit better than AMD/ATI most of the time, and current crop of comparable Nvidia to AMD cards, tend to run cooler and less power than their rivals, as well as tad better in many cases.

    Also like I mentioned Nvidia updates their drivers far more often.

    My self, as far as gaming uses go, I could care less which is "better", as long as I get the best bang for buck.

    Though I usually do tend to go with Nvidia myself. But thats usually because I've had an SLI capable motherboard for the past 5 or 6 years at least.

    I did try two 4870's in Crossfire 2 years ago, with my current motherboard (Intel X58 chipset, Crossfire only), but was never able to get Crossfire working, had everything I needed, good PSU, 2 working 1GB 4870's, working Mobo, but system wouldn't boot into Windows If I had both cards installed, only would work with one installed no matter the card or slot I had it in. so I used a single 4870 for a couple weeks, then got a good deal on a Geforce GTX 285, swapped that in, and the 4870's have sat on the shelf since (I gave one away to a friend last fall).

    I also had a Radeon 4830 in a system a couple years ago as well (always intended to run that in Crossfire with the 2 4870's in another motherboard I had, but never got around to it). I also had a Radeon 2600 Pro in another system for a while as well. Also have an old school Radeon 9700 Pro around here somewhere.

    but majority of my cards are Nvidia (mainly since Nvidia cards tend to do better with data Processing for Folding@Home than ATI/AMD cards do).

    (Several Old school Nvidia's as well, Geforce 3 Ti 500, Geforce 4 Ti 4200, Geforce 4 MX400, Geforce 4 Ti 4200 8x AGP Factory Overclocked to Ti 4800 speeds, used to have a Geforce 3 Ti 200 but sold that YEARS ago, Geforce 6600GT PCIe, Geforce 6600GT AGP, Geforce 7800GTX, none of these were good for F@H though)

    Geforce GT 220, Geforce 9600 GSO (Used to have 2, sold one, and giving the other away), Geforce 8800GTS 320MB (sold it), 8800GTS 512MB (also sold that a couple years ago), 9800GTX (Traded that for some PC parts), 9800GTX+ (have to buy a new capacitor and solder it on to get it working), GTX 285, GTX 260 216 Core 1792MB, GTX 470, GTX 560 Ti (should be delivered here today sometime, and will be buying a 2nd in a month or two for SLI on my newer Replacement X58 SLI capable motherboard, along with Overclocking my Intel i7 920 with the Corsair H60 Cooler and 2x 120mm Noctua fans on the Rad)

    But for gaming use I go for what ever gets me the best performance for my budget.

    In your case, with a 1KW PSU, and 3 or 4 card capable Crossfire ability on your Mobo, I'd stick with Radeons as well. But Nvidia is still an option, at least the GTX 590, but thats a bit out of the price range.

    This review shows a DX10 game, and lists how a 4870x2 compares to some of the newer cards (its a review for the 6990, but has the 4870x2 in this list for this game)

    Radeon HD 6990 review

    a single GTX 580 is a good 50% more fps in Crysis Warhead vs 4870x2.

    a Single 6970 is close to the GTX 580 as well.

    looks like the 4870x2 is close to the single GTX 470 I'm currently running.

    But the 6870 single GPU is clearly a bit better than a 4870x2 for this game alone, a 6870x2 based card would clearly be far better and may be the better card to go with.

    AS to whether the 6870x2 is Crossfire-able with another 6870 for 3 way crossfire, technically it should be, but unknown, since this is not a Standard AMD designed card, and in fact a Customized card made for Powercolor. It may not be supported by Drivers for Crossfire with another card.

    Similar to The EVGA Nvidia Geforce 2GB GTX 460 2Win (Twin), Dual GPU card, it has an SLI tab on the card, but they mentioned that the card is not capable of running SLI with a 2nd card, and it was only after production that they realized they forgot to remove the tabs (Yeah right), but the card would also need to be supported via Drivers for SLI as well, and since this is a Special one of kind card designed and built by/for EVGA, support for it would be limited.

    The card itself is as powerful as a single GTX 580, but costs less than it, though uses more power, is longer.

    Looked and I could not find that card on Ebuyer, Novatech or OcUK at all. Wonder if its only in the US or North America?

    Anyways, I'd probably go with the 6870x2, or even Two Radeon 6950 2GB cards in Crossfire for the cheaper options of staying below budget.

    Seems the 6870x2 also uses a Lucid Hydra Chip, to crossfire the two 6870's on the card, as well as allows you to use the 6870x2 along with say an Nvidia card for increased performance.

    Multiply by Two: PowerColor Radeon HD 6870X2 Graphics Card Review. Page 2 - X-bit labs

    MSI is one company that has a made a couple Lucid Hyrda Mobo Chipset boards, that allow one to run ATI/AMD & Nvidia Cards together in an SLI/Crossfire Hybrid design for increased performance.

    Needless to say the idea was great, but the boards have always had all sorts of issues and relatively inconsistent performance issues. It works, but the performance you get is hard to determine really.

    Its an interesting Idea to put the chip on a Video card, but hard to say how much of a boost you'd get running with another brand GPU. Though I suspect it would allow one to run the 6870x2 with say your old 4870x2 if you wanted. not sure if the Lucid Hydra chip needs both cards to run DX11 or not. but it'd be something worth trying and find out.

    otherwise the 6870x2 and a single 6870 1GB would certainly be a possible option for under the budget.

    PowerColor HD 6870X2 Dual GPU 2GB GDDR5 Dual DVI Dual.. |


    PowerColor HD 6870 1GB GDDR5 Dual DVI HDMI DisplayPort.. |
  • August 26th, 2011, 03:28 AM
    Thank you for your swift reply.

    I don't even know what I should start replying to first hehe. It was the best answer I could ever imagine to get.

    I'll start of by listing the components I have. So:
    Mobo: MSI 890FXA-GD70
    CPU: Phenom II X4 965 Black Edition 3.4Ghz (Corsair H80 cooling if that matters at all)
    PSU: Thermaltake Toughpower 1000W

    6990 does seem to be on pre-order or out of stock everywhere ... But yeah I would consider buying it, it is a great card ... and only just slightly over my budget.

    My computer sounds like a jet engine and the card gets VERY hot which brings the overall temperature up. All I want to do with my card is to play a few games like the Witcher 2 and Mafia 2 ... which i seem to have the most problem with, on my current card. It runs smoothly on mid settings, but it doesn't really satisfy me >.< . Well, Crysis 2 runs on maximum settings, which I thought was amazing.

    I don't know what it is about NVidia cards but I am very prejudiced against them, so that's a NO NO from me, even though my reasoning is quite stupid.

    I have checked out the cards you have recommended and, hopefully choose the better in this case 6990, I don't know what it is, but I really don't like the idea of crossfiring 2 cards ... after the reviews I've read, that it is completely not worth it, and I will never get twice the performance and all the negative stuff ...

    Which card would you recommend if I was to go for the cheaper option (excluding, in this case cross-fire and 6990)
    -6870 (dual GPU from PowerColor)
    -OR the 6950?

    Once again, thank you for all the info.
  • August 26th, 2011, 12:50 AM
    as far as I know there is no 6870x2. Starting with the 5000 series ATI/AMD did away with the x2 Designation.

    The Dual GPU 5000 series was the 5970. The Dual GPU 6000 Series is the 6990.

    with the 6990 you can crossfire it with a 6950 or 6970.

    with the 5970 you can Crossfire it with a 5830, 5850 or 5870.

    I think the single GPU Radeon 6950 or 6970 should be nearly twice what the 4870x2 was capable of.

    The equivalent 5000 & 6000 Series cards to the 4870x2 would be something like Two Radeon 5770 or 6770 in Crossfire. These are both now $100-120 range cards. (both the same card, the 6750/6770 is the same as the 5750/5770 with some minor enhancements), the Radeon 6950/6970 are $250 & $300+ range cards.

    I think a Radeon 6970 is about 50% or less better than a 4870x2, at least specs wise (Depending on the specs your looking at).

    Video Card Comparison -

    a single 6990 would be double what the 4870x2 was. Video Card Comparison -

    Not sure if you can find a 6990 anymore, I haven't read anything specifically, but they seem to have disappeared from most retailers in the past few months, wondering if AMD ceased production or what.

    But you could opt for running 2 Single 6970's in Crossfire, would yield similar performance.

    Though you'd need to make sure your Power supply can handle it, as for once AMD/ATI are the power hogs with their current generation graphics cards.

    And the problem is, 2x 6970's would cost about 600 GBP.

    And surprisingly, Nvidia is the lower power consuming cards now, with only slightly better performance (GTX 570 better than the 6950, and GTX 580 is Better than a 6970), Nvidia's GTX 590 (Dual 580's) is better than the Radeon 6990 by a bit as well, and actually uses less power than two 580's in SLI, since its clocked a bit slower than the standard Single GPU 580's.

    Edit: I see now, Powercolor has a Custom Made 6870x2. It should be more powerful than a 4870x2, but it won't be twice the performance, a single 6870 is close to the 6950 in performance.

    If I were to guess on a 6870x2 cards performance, I'd say its probably going to be about 50% better than a 4870x2.

    2 Single 6950 2GB cards in Crossfire will be better than a single 6870x2. though probably not a huge difference over the 4870x2.

    You'd be looking at close to 420 GBP for 2 of those. And there's not a huge leap between the 6950 and 6970. So that might be the better route. Plus in case you needed to upgrade your PSU, it leaves almost 80-100 pounds towards that.

    If you can spare another 70 Pounds, this is what I would get for the budget: Sapphire ATI Radeon HD 6990 4096MB GDDR5 PCI-Express Graphics Card [102-C20601-00-AT]

    But if your just looking for a card with similar or better (even if its only slightly better) performance over your current DX10 4870x2, and that supports DX11 features, then the 6870x2 would be fine, at least as powerful as the 4870x2, and should be a bit better. But for the price and performance boost, considering your budget, I'd be looking at a couple Single GPU Card 6950's (assuming your motherboard has Two PCIe x16 Slots with at least x8 x8 PCIe 2.0 Bandwidth, or x16 x8)

    What Motherboard do you have? CPU? PSU specs?
  • August 26th, 2011, 12:01 AM

    Upgrading GPU from HD 4870x2 to ?unknown?

    First of all I would like to say hello to everybody on the forum, as I am a new user.

    I have been looking to get a new graphics card recently, and have a few questions. I have been unable to identify, if I can crossfire 6870x2 (the dual GPU) with the single GPU sister card 6870. Do you think that would work properly?

    Second of all, if I was to get 6870x2 and already have 4870x2, do you know any benchmark lists I could compare them both in terms of texel rate, pixel rate and memory bandwidth? The main reason of upgrading to 6870x2 is the price (317 on Ebuyer) and an DirectX11 support, which was my main concern

    My last question is, if you have any suggestions about any other graphic cards from AMD RADEON series, that would be significantly better than 4870x2 but still in a (reasonable ) 500 price range.

    Thank you in advance for any help, any kind of information will be appreciated.


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