one card is fine, but crossfire uses more bandwidth and is best on a 16x/16x
one card is fine, but crossfire uses more bandwidth and is best on a 16x/16x
Any ideas when the 1GB HD4870 is going to hit the streets?
Stop looking at the walls, look out the window
Why is that then?Originally Posted by bill_d
E8400 Q15A @ 8.5x500=4250Mhz with 1.28 vcore -- TRUE 120 with Scythe Ultra Kaze in push pull
ASUS P5Q Deluxe 1702 Bios -- PC Power & Cooling Silencer QUAD Crossfire 750w
2x1GB Crucial Ballistix PC6400 (16FD5) & 2x1GB Crucial Ballistix PC8500 (16FD5) @ 1000mhz 4-4-4-12 PL9 @ 2.17v real with Corsair Dominator Active Cooling
ATI HD4870x2 Cat 9.1 - Custom modded ASUS TOP Bios 832/1000
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is it not because its different chipsets and mobos. i still think it is no bigge to crossfire with pci-e 1 compared to 2
E6600"L630A446"? @3600@1.?v cooled by Tunic Tower sitting on Abit AB9 Quad GT played on ASUS 8800GTX opperated by a lazy slacker!
From what I have seen, I would say around July 8th.
Intel E5-2660 (ES) @ 2.4 Ghz x2-----AMD Opteron 6172
Asus Z9PE-D8 WS---------------------ASUS KGPE-D16
Corsair Vengence 48GB DDR3-1600-Crucial 16 GB DDR3-1333
EVGA GTX 690 ------------------------HIS HD 6970 x2
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Corsair 32GB SSD
Creative Soundblaster Z................ASUS Xonar Essence
Xigmatek Elysium
Razer Mamba
Silverstone 1500W PSU
What is the ETA for the official driver for the 4870?
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Does it ever shock anyone else when your hear someone use Darwin's "survival of the fittest" to justify genocide?
Finally, Techpowerup: Diamond HD 4870 512 MB GDDR5
http://www.techpowerup.com/reviews/Diamond/HD_4870/
Last edited by onethreehill; 06-30-2008 at 09:36 PM.
Thanks, just wanted to be sure.
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They don't, that was probably a driver issue.
This is correct - the problem was that RBE and GPU-Z were only pulling 64k of the 128k bios out of the card, flashing a truncated bios back in caused the cards to not post. No one knew this because all prior ATI cards (including the 4850) have a 64k bios.
I recovered my card from a bad flash (it's rockin' by the way) and then used RBE to mod the 128k bios to include ramped fan control and flashed the newly modded bios back in - it works fine, just like you'd expect.
You can use me as the canary in the mineshaft for the next couple of weeks if you're feeling cautious.
core i7 920, gigabyte EX58-UD5, 4870x2
DDC3.2 > PA120.3 > DD4870x2fc > Fuzion v1 > PA120.2 > EK Res
Thats what i was hoping (as i have just bought a P45!) but have you got any evidence of this please?
Cheers
E8400 Q15A @ 8.5x500=4250Mhz with 1.28 vcore -- TRUE 120 with Scythe Ultra Kaze in push pull
ASUS P5Q Deluxe 1702 Bios -- PC Power & Cooling Silencer QUAD Crossfire 750w
2x1GB Crucial Ballistix PC6400 (16FD5) & 2x1GB Crucial Ballistix PC8500 (16FD5) @ 1000mhz 4-4-4-12 PL9 @ 2.17v real with Corsair Dominator Active Cooling
ATI HD4870x2 Cat 9.1 - Custom modded ASUS TOP Bios 832/1000
2 x Samsung F1 1TB + 1 x Samsung F1 320GB -- X-Fi Xtreme Music -- Logitech G15 v2 + Razer Lachesis
Dual Boot XP 32 SP2 + Vista 64 Ultimate SP1 -- Samsung T220 22" Monitor (Samsung Panel) + Samsung LEA656 40" 1080p TV
Then I'll ask you two things if you don't mind
1 - Have you tried the 160MHz clocks at idle?
2 - When UVD is active, the card uses 750MHz? If so, I'd try to lower it to 160MHz too. The 3870 uses 700MHz when UVD is in use, but it works just fine with the standard 2D clocks of 300MHz, so I lowered them via BIOS.
I'd do this myself but I don't have my card yet
Friends shouldn't let friends use Windows 7 until Microsoft fixes Windows Explorer (link)
I haven't messed with bios clock changes, I'm still playing with the card through CCC. I have a feeling it's going to take water to really push the core (lotsa heat) so I'm just using it normally for now.Then I'll ask you two things if you don't mind
1 - Have you tried the 160MHz clocks at idle?
2 - When UVD is active, the card uses 750MHz? If so, I'd try to lower it to 160MHz too. The 3870 uses 700MHz when UVD is in use, but it works just fine with the standard 2D clocks of 300MHz, so I lowered them via BIOS.
I'd do this myself but I don't have my card yet
Here are the clock state profiles (UVD is using 4/5/6 for low/med/high)
From this you can see that the card doesn't ever clock down below 500 on the core and the ram doesn't clock below 900 ever. I kinda wonder if they had issues with the ram during power state changes. I also heard rumors about one of the manufacturers having a fixed bios out that enabled better powerplay functionality, so I'll see if I can find it and try it out.
core i7 920, gigabyte EX58-UD5, 4870x2
DDC3.2 > PA120.3 > DD4870x2fc > Fuzion v1 > PA120.2 > EK Res
it's just powerplay not working yet read someware it will be fixed with driversI haven't messed with bios clock changes, I'm still playing with the card through CCC. I have a feeling it's going to take water to really push the core (lotsa heat) so I'm just using it normally for now.
Here are the clock state profiles (UVD is using 4/5/6 for low/med/high)
From this you can see that the card doesn't ever clock down below 500 on the core and the ram doesn't clock below 900 ever. I kinda wonder if they had issues with the ram during power state changes. I also heard rumors about one of the manufacturers having a fixed bios out that enabled better powerplay functionality, so I'll see if I can find it and try it out.
Looking at that pic the only thing you have to do to have proper PowerPlay is change clock 1 to 160MHz and 1.04v, and about UVD it only has on/off (using/not using), only two power states, so you can discard clock 5. Off is 2D clocks (500 in this BIOS), so I guess it will use 750MHz when decoding.I haven't messed with bios clock changes, I'm still playing with the card through CCC. I have a feeling it's going to take water to really push the core (lotsa heat) so I'm just using it normally for now.
Here are the clock state profiles (UVD is using 4/5/6 for low/med/high)
From this you can see that the card doesn't ever clock down below 500 on the core and the ram doesn't clock below 900 ever. I kinda wonder if they had issues with the ram during power state changes. I also heard rumors about one of the manufacturers having a fixed bios out that enabled better powerplay functionality, so I'll see if I can find it and try it out.
Friends shouldn't let friends use Windows 7 until Microsoft fixes Windows Explorer (link)
Does voltage adjustment in RBE even work? I was under the impression it did nothing?
Check it with a DMM, but in the 4850's it works up to 1,20v
Friends shouldn't let friends use Windows 7 until Microsoft fixes Windows Explorer (link)
What's the default voltage? 1.15v?
INTEL Core i7 920 // ASUS P6T Deluxe V2 // OCZ 3G1600 6GB // POWERCOLOR HD5970 // Cooler Master HAF 932 // Thermalright Ultra 120 Extreme // SAMSUNG T260 26"Has anyone really been far even as decided to use even go want to do look more like?
maybe 4870s can go to 2.3 bit idk my girlfriends dad is letting me borrow his 6decimal accurate multimeter so I guess I'll test my cards voltages out in a few days
Arctic Cooling seemed to have something new...
Accelero TWIN TURBO
Application:
ATI: Radeon
HD 4870, 4850
HD 3870, 3850,
HD 2600, 2400,
X1950, X1900,
X1800, X1650,
X1600,
X1550,
X1300 series
Nice coolingArctic Cooling seemed to have something new...
Accelero TWIN TURBO
Application:
ATI: Radeon
HD 4870, 4850
HD 3870, 3850,
HD 2600, 2400,
X1950, X1900,
X1800, X1650,
X1600,
X1550,
X1300 series
Q6600 1.390v 3.8G Vid: 1.2125
Guru3D CrossfireX review
http://www.guru3d.com/article/radeon...x-performance/
[Review] Core i7 920 & UD5 » Here!! « .....[Review] XFX GTX260 216SP Black Edition » Here!! «
[Review] ASUS HD4870X2 TOP » Here!! « .....[Review] EVGA 750i SLi FTW » Here!! «
[Review] BFG 9800GTX 512MB » Here!! « .....[Review] Geforce 9800GX2 1GB » Here!! «
[Review] EVGA GTX280 1GB GDDR3 » Here!! « .....[Review] Powercolor HD4870 512MB GDDR5 » Here!! «
Looks slick
Last edited by GoldenTiger; 07-03-2008 at 07:22 AM.
I wonder how an HD4870 and a HD4870 x2 in Crossfire would perform together. I wonder if it would be worth the effort of having Crossfire or not.
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http://www.cuddlewar.com/
Would I be fine running a 4870 on my Corsair VX450 PSU?
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