RADEON HD 3870 AND 3850 Oc and Other experiences !!!

[desadarius2002]

awesome, thats what im buying. when i get the cash that is, and if its still avalible.

 

[zOaib]

question ?

so is anyone running these babies in CF successfully , cause i am using one card at the moment to run games , the other one is just chillin.

 

[Random Murderer]

question ?

so is anyone running these babies in CF successfully , cause i am using one card at the moment to run games , the other one is just chillin.

the only rigs i have seen successfully running hd3k crossfire are on vista, but don't quote me on that...

 

[trog100]

the only rigs i have seen successfully running hd3k crossfire are on vista, but don't quote me on that...

u might have a point there about vista.. seen enough reviews to know they work in crossfire but as u say it might just be vista.. i hope not.. he he he

still if they work in vista they should work in XP.. err.. eventually..

trog

ps.. just noticed zoaib is on vista.. mine should be here in a couple of days and i am on XP..

 

[Xolair]

BTW, how big of a difference is there in performance between the HD3850 and the HD3870? 10-15%? Would it be worth it to pay a bit extra for the HD3870, or can you just OC the HD3850 to the same numbers, or beyond? The stock cooler probably sucks when compared to the HD3870's one, though..?

 

[Random Murderer]

BTW, how big of a difference is there in performance between the HD3850 and the HD3870? 10-15%? Would it be worth it to pay a bit extra for the HD3870, or can you just OC the HD3850 to the same numbers, or beyond? The stock cooler probably sucks when compared to the HD3870's one, though..?

i doubt that you could oc the 3850 to match 3870 speeds without some sort of insane volt mod, you're talking about a 100MHz oc on the core and a 300MHz oc on the mem...

 

[Xolair]

i doubt that you could oc the 3850 to match 3870 speeds without some sort of insane volt mod, you're talking about a 100MHz oc on the core and a 300MHz oc on the mem...

But is it possible with better cooling than the stock HD3850 provides?

 

[Random Murderer]

But is it possible with better cooling than the stock HD3850 provides?

300MHz on the memory!
you'd need some sort of crazy sub-zero ramsinks...

100MHz on the core wouldn't be too tough with a voltmod and some better cooling, like a zalman or duorb.

 

[Xolair]

300MHz on the memory!
you'd need some sort of crazy sub-zero ramsinks...

100MHz on the core wouldn't be too tough with a voltmod and some better cooling, like a zalman or duorb.

Oh yeah, the memory... of course didn't think that it'd reach that much speed, but just that would it improve all in all with a better cooler. Doesn't matter now, went for a HD3870 instead.

 

[Random Murderer]

Oh yeah, the memory... of course didn't think that it'd reach that much speed, but just that would it improve all in all with a better cooler. Doesn't matter now, went for a HD3870 instead.

you won't be disappointed, i love mine.

 

[Xolair]

^ Heh, tried to cancel my order on a HD3850 but was too late, maybe if I'm disappointed with the GPU I could send it back... well, guess it's bye-bye for a HD3870, anyhoo.

 

[Laurijan]

Ati 3800 series crossfire doesnt work, there is an overlock limit in the bios, they doesnt work properly in xp, bad drivers.. I think i get a 8800GT

 

[Random Murderer]

Ati 3800 series crossfire doesnt work, there is an overlock limit in the bios, they doesnt work properly in xp, bad drivers.. I think i get a 8800GT

you're wrong on all points there.
hd3k crossfire DOES work
the overclock limit is easily fixed
i'm running xp, so it does work
the drivers are fine, the display driver just needs to be installed manually
and the 8800gt costs more for mediocre improvements and a lack of dx10.1 and sm4.1, both of which the 38x0 has.
so go take your fanboyism somewhere else unless you have something useful to say.

 

[SteeMcghee]

you're wrong on all points there.
hd3k crossfire DOES work
the overclock limit is easily fixed
i'm running xp, so it does work
the drivers are fine, the display driver just needs to be installed manually
and the 8800gt costs more for mediocre improvements and a lack of dx10.1 and sm4.1, both of which the 38x0 has.
so go take your fanboyism somewhere else unless you have something useful to say.

Seconded, well said

 

[zOaib]

yes i gots vista running , but now i think about it i really did not experiment enough with the settings , also i have not flashed the new bios to my second card , so maybe that the reason ................. will try that out n see .

 

[Tatty_Two]

you're wrong on all points there.
hd3k crossfire DOES work
the overclock limit is easily fixed
i'm running xp, so it does work
the drivers are fine, the display driver just needs to be installed manually
and the 8800gt costs more for mediocre improvements and a lack of dx10.1 and sm4.1, both of which the 38x0 has.
so go take your fanboyism somewhere else unless you have something useful to say.

Agree completely and I have an 8800GT! I think the 3870 is excellent Price > performance and I would not be at all surprised that after a couple more driver releases it matches the 8800GT, I only got the GT cause I am a bit of a NVidia fanboi......difference is I dont shout uninformed fanboism crap around :shadedshu But.....can you name a game that uses DX10.1?

 

[Random Murderer]

Agree completely and I have an 8800GT! I think the 3870 is excellent Price > performance and I would not be at all surprised that after a couple more driver releases it matches the 8800GT, I only got the GT cause I am a bit of a NVidia fanboi......difference is I dont shout uninformed fanboism crap around :shadedshu But.....can you name a game that uses DX10.1?

not yet, but that's the same thing everyone said when the original dx10.0 cards came out.

 

[trog100]

difference is I dont shout uninformed fanboism crap around But.....can you name a game that uses DX10.1?

nope and by the time he can we will all need new (more powerfull) grafix cards to play the bloody thing..

trog

 

[Tatty_Two]

not yet, but that's the same thing everyone said when the original dx10.0 cards came out.

Very true, but I bought mine cause it was faster in DX9 too

 

[snarfbot]

Anyway, if you guys have got any HD3850's and Crysis' demo for example, could you run a benchmark @ 1280*1024 and medium/high detail, with 2X AA enabled and without? It'd be nice to know what kind of performance the 3850 would get in those settings...

alright i didnt do any hard benchmarks but ill tell you how it runs for me, if you have everything at medium it runs great. 30+ all the way, this is overclocked mind you, 770 core, 1000 mem, on a e2140 oc'ed to 2.8 with 2 gigs of ram.

most of the settings have a negligible impact on framerate, the ones that do though, and are not suprisingly the ones that make the game look awesome are the postprocessing setting and the shader level setting.

the post processing includes the motion blur and the godrays, which look phenominal by the way, and the edge antialiasing, which makes the leaves blend in with the sky. very high really hurts performance.

the shader level setting is probably most important, it enables normal maps at the high setting and parallel occlusion maps at very high. these really make a bigger difference to the image quality particularly in a well lit area, than higher texture settings. imo anyway. the performance hit here, is also pretty significant,

everyone freaks out about the water, it looks nice but its not really worth the performance hit to me.

with those 2 settings maxed and everything else on medium except for textures and shadows the game looks great but it runs at 15-25 fps or around there. its playable but youll miss alot and its frustrating.

but if you manually edit the config files its easy to get to a setting that is very playable and good looking.

if i could do it all over though, i wouldve waited till the 3870's were back in stock. incidentally newegg has a 512mb gecube 3850 in stock, for $209.

thats probably your best bet, especially if you want aa. aa totally destroys the framerate, even 2x. new drivers might help but its probably just because it only has 256 mb of framebuffer. and its constantly swapping data back and forth to main memory.

 

[KainXS]

what are you guys talking about, the 3850 has already been overclocked over the 3870's stock speeds over at xtremesystems, the Gpus are the same, the only difference is that the 3850's has less voltage to its Gpu and ddr3, at the same speeds the 3850 beats the 3870 because the memory is tighter timings as proved on many other cards

 

[mitsirfishi]

http://www.overclockers.co.uk/showproduct.php?prodid=HS-053-TR

here is the new hr-03 might have to get one of these badgers is there any version of ati tool which lets you adjust the fan speed on the hd3870's its annoying using rivatuner just use one setting for your fan and off you go max oc ive had with that bios fix is 885/1358 so far need a vmod and some better cooling for sure.

 

[trog100]

what are you guys talking about, the 3850 has already been overclocked over the 3870's stock speeds over at xtremesystems, the Gpus are the same, the only difference is that the 3850's has less voltage to its Gpu and ddr3, at the same speeds the 3850 beats the 3870 because the memory is tighter timings as proved on many other cards

makes sense same chip at difference voltages..

trog

 

[Deleted member 24505]

I fancy this--->http://www.overclockers.co.uk/showproduct.php?prodid=HS-007-TI&groupid=701&catid=57&subcat=787 cooler

 

[trog100]

http://www.overclockers.co.uk/showproduct.php?prodid=HS-053-TR

here is the new hr-03 might have to get one of these badgers is there any version of ati tool which lets you adjust the fan speed on the hd3870's its annoying using rivatuner just use one setting for your fan and off you go max oc ive had with that bios fix is 885/1358 so far need a vmod and some better cooling for sure.

as yet nope.. but a faster auto fan is something we all want.. or at least one that starts working before the chip gets to 90 C..

trog