R520 More results...

maverik-sg1

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r520results13ys.jpg

r520results27vd.jpg

Consider the clock speeds of the two cards in question here - only overclocked will we see a true winner - as it stands, it's too close to call although 3dmark scores are impressive for the X1800XT.

Mav
 
Yeah that's the inq one. That's the best review out atm. I think with proper cooling and clocking the X1800XTs should give the 7800GTXing a thrashing in the 3dmark leaderboard especially since they won't have a coldbug and will scale better with higher clocks (judging by trends).
 
The lack of coldbug is definately a plus point for the ATI cards, no doubt about it.

I thought the 7800 has got past the cold bug with a driver fix?
 
Gollum is absolutely right - Nvidia cards are notorius for not likeing sub zero temps so driver fix or not it's still the achilles heel of the current offerings.

Thats not to say that the non-reference designs by the likes of ASUS and XFX will be cold bug free (as recent trends have proven).

The reviewer goes on to say how hot the XT runs - I am given to understand though that the review sample is an XL unit overclocked version to XT speeds (mainly due to the extremely poor availability of the highest end unit AFAIK) so the actual XT will hopefully run cooler, unless of course R520 cores suffer from the same heat issue 90nm P4's have - the XL and XT are both dual slot cooled.

The issue here is that the GTX can run at 620/1550 (volt modded & watercooled at a very reasonable price) thats a 190Mhz overclock - so for X1800 to compete it's gotta run at around 815/1550.......... enter Gollum and his cascade/chiller collection to make it so :) and I am sure he will smash a few records in the process.

But for those less fortunate that do not have £2500+ worth of cooling solution at their disposal - it appears difficult to ascertain how that will happen in an everyday scenario when they already run so hot? (enter phil with a new series of cooling components ;) )

Clearly drivers used are not FM approved so they'll be no immediate assault on the hall of fame, but this has the potential to be the competition that we have all waited a year for.

Just a few stats for you:

Over 2 million SLI montherboards sold this year

2.8M 6800/7800 VGA cards (sli PCI-E that is)

X1800XT will be in excess of £420 (+£50 for crossfire master)

R200 Chipset Motherboards will roll in £150ish

My feelings are that those who have already started down the NF4 SLI path will not be looking at this product yet - although new-comers will have the choice - as it seems to be close in regards performance, cost Vs Performance will be the ultimate factor.
 
name='GoLLuM4444' said:
I'm fairly sure the XL is single slot. Also they're not the same core. :eek:

I am fairly sure the review sample we see here is the XL - that being the case it's dual slot.

They are both R520 so one would assume that they are the same core?

Feel free to post some details down though to substantiate, interesting if its true. EDIT - Found it - looks like the 1st batch of these are going to be a pick 'n' mix of good and bad batches.

Cheers

Mav
 
The real question is, when will they be available and at what price. I fear neither are the answer people are lookign for. X800XT PE all over again.
 
Excellent Goo dfind Gollum mate.

Top range cards clock in at 625/1500, interesting in so far as the clocks required to compete is easily achieved.

To compete with the GTX clocks must run at 1.45x higher than that of the equivalent GTX (although it does not seem the case in 3dm05 I think we need to see FM approved driver results first before we specualte more in that area).

Meaning core clocks of 870Mhz will be required to compete with the volt-modded GTX units.

If any rig can do it Gollums can.

Mav



 
Thats definately a complement! :)

People are complaining about efficiency when the clock speeds need to be so high to compete with NVidia... Its like AMD Vs Intel... as long as it does the job, does it matter?

Theres ideas flying around that the cards are optimised for 3DMark.... and real-world performance aint as earth-shattering.
 
K404 said:
Thats definately a complement! :)

People are complaining about efficiency when the clock speeds need to be so high to compete with NVidia... Its like AMD Vs Intel... as long as it does the job, does it matter?

Seeing as a GTX has 50% more pipes, id say the 1800XT is more efficient.
 
name='Grov' said:
Seeing as a GTX has 50% more pipes, id say the 1800XT is more efficient.

Thats one way of looking at it - but also consider that the X1800 has to run the core 1.45 times faster than the GTX to get comparable gaming results.

The ratio is very similar to the intel CPU versus Athlon clocks - which is considered more efficient at processing?
 
Nvidia win IMO, well they already have won since their cards are released. I guess if you benchmark then ATI is the way to go but for everyday day gaming nvidia maybe? Too soon to tell though.

Thanks for the info Mav.
 
maverik-sg1 said:
Thats one way of looking at it - but also consider that the X1800 has to run the core 1.45 times faster than the GTX to get comparable gaming results.

The ratio is very similar to the intel CPU versus Athlon clocks - which is considered more efficient at processing?

But when yo look at the actual figures on paper, there neck and neck, as far as specs go.

Most sites are saying the ATI cad is very efficient, and i tend to agree.
 
Grov said:
But when yo look at the actual figures on paper, there neck and neck, as far as specs go.

Most sites are saying the ATI cad is very efficient, and i tend to agree.

I think pipe for pipe it's more efficient, but the lack of pipes (16 Vs 24) make it work harder for the same result - if that makes sense??
 
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