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4850 vs 4770

4850 has the edge in performance.

4770 runs cooler, uses less power, and is slightly cheaper.
 
4850 has the edge in performance.

4770 runs cooler, uses less power, and is slightly cheaper.

though all the ATI offers over the last couple of days have muddied the waters!

4850 is actually slightly cheaper than 4770 now ... plus 4870 is only £30 more ... currently deciding if I can resist this offer!
 
though all the ATI offers over the last couple of days have muddied the waters!

4850 is actually slightly cheaper than 4770 now ... plus 4870 is only £30 more ... currently deciding if I can resist this offer!

I think you'd be mad not to stretch for the 4870. :)
 
Well actually if you know how to tweak it an OCed HD 4770 can come within 1% of the performance of a HD 4870 at half the power consumption. ;)

All you need is 960/1125 clocks :D with the right bios and cooling its quiet and FAST.
 
But then you overclock the 4870 and the gap is back again! Or you get a lemon of a 4770.

You can't really recommend a card based on an overclock, as much as the GTX260 tribe would shout otherwise. It's just not guaranteed.

Better off getting the better card at stock and then taking any overclock as a bonus.
 
I think you can get away with 300W if it's a good, efficient PSU.

I'd recommend 400W at least, pref. 450W.

It takes two 6 pin PCIe connectors, along with the power from the slot.
 
I think you can get away with 300W if it's a good, efficient PSU.

I'd recommend 400W at least, pref. 450W.

It takes two 6 pin PCIe connectors, along with the power from the slot.

from sapphire website

–450 Watt or greater power supply with 75 Watt 6-pin PCI Express® power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)

.... + I did a check of PSU req's on one of the web based tools a few days ago and on my setup (720X3 CPU) I only got to 450W on a 4870 setup if I included OC-ing CPU to 3.5GHz @ 1.5V and then allowing a 20-25% aging degrade
 
Yeah, but people have gotten two 4870s going on a Corsair HX520 before! :p

Also, I was going on the fact that if you have a look on [H], people are building small ITX systems with the Zotac board and plonking a 4870 on it, then running it off the inbuilt 300W supply of a Sugo SG05. :)

Planning on maybe doing the same myself.
 
Well all the HD 4770s clock very well that I have heard about. Also some HD 4870s dont clock at all and if you want a quiet system are going to be a lot harder to cool properly.
 
Ended up getting the Asus 4850 512Mb; as both the 4770 and 4870 were out of stock- few quick q's...

The ATI tool reports that the card has 1024 memory instead of 512- does this indicate it is stealing system memory?

The memory clocks are reported as 1004MHz- 1200 max; does that sound about right?

Thanks Again!
 
Ended up getting the Asus 4850 512Mb; as both the 4770 and 4870 were out of stock- few quick q's...

The ATI tool reports that the card has 1024 memory instead of 512- does this indicate it is stealing system memory?

The memory clocks are reported as 1004MHz- 1200 max; does that sound about right?

Thanks Again!

1024MB memory reported? might want to check the sticker on the card to confirm If that is true.. If it is, then I guess you got lucky ;)

not sure about the memory frequency as I don't recall an asus card with 1200MHz memory clockspeeds.

Which card did you get?
 
1024MB memory reported? might want to check the sticker on the card to confirm If that is true.. If it is, then I guess you got lucky ;)

not sure about the memory frequency as I don't recall an asus card with 1200MHz memory clockspeeds.

Which card did you get?

It reports the 1024MB in the Cat control centre- is there another way to check?

http://www.overclockers.co.uk/showproduct.php?prodid=GX-168-AS&groupid=701&catid=56&subcat=938

According to the spec the mem should clock at 1986MHz?

Cheers
 
unless you're looking at realtime memory clock speeds... which would be just about right for power saving purposes.. got any screenshot we could have a look at?

Although I suggest you check the sticker at the back of the card first to make 100% sure you got the right card.
 
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