Crossfire question

I have an XFX HD 4770 and am considering going to crossfire with another
4770.

Do I need to get exactly the same model for the second card?

GT wrote:
> I have an XFX HD 4770 and am considering going to crossfire with another
> 4770.
>
> Do I need to get exactly the same model for the second card?
>
>

http://en.wikipedia.org/wiki/ATI_CrossFire

"CrossFire can be implemented with varying-GPU cards of the same generation
(this is in contrast to Nvidia's SLI, which generally only works if all cards
have the same GPU). This allows buyers who have varying budgets over time to
purchase different cards and still get the benefits of increased performance.
With the latest generation cards, they will only crossfire with other cards
in their sub series. For example, GPU in the same series can be crossfired
with each other. So a 5800 series GPU (e.g. a 5830) can run together with
another 5800 series GPU (e.g. 5870). However GPU's not in the same hundred
series cannot be crossfired successfully. (e.g. a 5770 cannot run with a 5870)"

You might want to do a little research though, on "microstutter", to see
if doing things like that has any side effects or not. I've never run
SLI or Crossfire here, and have no first hand experience with it.

http://forums.extremeoverclocking.com/t299445.html

Paul

"Paul" <nospam@needed.com> wrote in message
news:jc90ba$si2$1@dont-email.me...
> GT wrote:
>> I have an XFX HD 4770 and am considering going to crossfire with another
>> 4770.
>>
>> Do I need to get exactly the same model for the second card?
>
> http://en.wikipedia.org/wiki/ATI_CrossFire
>
> "CrossFire can be implemented with varying-GPU cards of the same
> generation
> (this is in contrast to Nvidia's SLI, which generally only works if all
> cards
> have the same GPU). This allows buyers who have varying budgets over
> time to
> purchase different cards and still get the benefits of increased
> performance.
> With the latest generation cards, they will only crossfire with other
> cards
> in their sub series. For example, GPU in the same series can be
> crossfired
> with each other. So a 5800 series GPU (e.g. a 5830) can run together
> with
> another 5800 series GPU (e.g. 5870). However GPU's not in the same
> hundred
> series cannot be crossfired successfully. (e.g. a 5770 cannot run with
> a 5870)"
>
> You might want to do a little research though, on "microstutter", to see
> if doing things like that has any side effects or not. I've never run
> SLI or Crossfire here, and have no first hand experience with it.
>
> http://forums.extremeoverclocking.com/t299445.html
>
> Paul

Hmm. Thanks. I don't see a benefit to upgrading my HD4770 to another card -
the price/performance improvement just doesn't seem worth it. According the
reviews I've seen the 6770 or 6790 cards are not much faster and I can't
afford more than that. I'm looking to upgrade my motherboard and move up to
an overclocked 2500k, but I can't decide on the graphics card or which
motherboard to go for. Any advice on motherboards for overclocking a 2500k
on a budget. I would like at least 4 DDR slots and firewire on board if
possible, but I don't need the 2500k GPU as its slower than my HD4770.

GT wrote:
> "Paul" <nospam@needed.com> wrote in message
> news:jc90ba$si2$1@dont-email.me...
>> GT wrote:
>>> I have an XFX HD 4770 and am considering going to crossfire with another
>>> 4770.
>>>
>>> Do I need to get exactly the same model for the second card?
>> http://en.wikipedia.org/wiki/ATI_CrossFire
>>
>> "CrossFire can be implemented with varying-GPU cards of the same
>> generation
>> (this is in contrast to Nvidia's SLI, which generally only works if all
>> cards
>> have the same GPU). This allows buyers who have varying budgets over
>> time to
>> purchase different cards and still get the benefits of increased
>> performance.
>> With the latest generation cards, they will only crossfire with other
>> cards
>> in their sub series. For example, GPU in the same series can be
>> crossfired
>> with each other. So a 5800 series GPU (e.g. a 5830) can run together
>> with
>> another 5800 series GPU (e.g. 5870). However GPU's not in the same
>> hundred
>> series cannot be crossfired successfully. (e.g. a 5770 cannot run with
>> a 5870)"
>>
>> You might want to do a little research though, on "microstutter", to see
>> if doing things like that has any side effects or not. I've never run
>> SLI or Crossfire here, and have no first hand experience with it.
>>
>> http://forums.extremeoverclocking.com/t299445.html
>>
>> Paul
>
> Hmm. Thanks. I don't see a benefit to upgrading my HD4770 to another card -
> the price/performance improvement just doesn't seem worth it. According the
> reviews I've seen the 6770 or 6790 cards are not much faster and I can't
> afford more than that. I'm looking to upgrade my motherboard and move up to
> an overclocked 2500k, but I can't decide on the graphics card or which
> motherboard to go for. Any advice on motherboards for overclocking a 2500k
> on a budget. I would like at least 4 DDR slots and firewire on board if
> possible, but I don't need the 2500k GPU as its slower than my HD4770.
>
>

I took a look through the Newegg list, but nothing really caught my eye.

It's been a few years, since I could read the Feedback section, and
actually find a motherboard that wasn't plagued with some kind of problem.
I notice a couple Gigabyte motherboards had some kind of "boot loop" problem
at startup. You'd think they'd catch stuff like that, before they
leave the lab and designer test.

Paul

In article <4ee7bb78$0$7428$c3e8da3$26f9d57d@news.astraweb.co m>, "GT" <a@b.c> wrote:
>I have an XFX HD 4770 and am considering going to crossfire with another
>4770.
>
>Do I need to get exactly the same model for the second card?
>
>

Look here


<http://sites.amd.
com/PublishingImages/Public/Graphic_Illustrations/WebBannerJPEG/AMD_CrossfireX
_Chart_1618W.jpg>