XFX Radeon HD 7850 2GB Core Edition....$239/fs no mir!

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arkcom

Golden Member
Mar 25, 2003
1,816
0
76
How about if I overclock it?

No, the site adds more ads to keep constant performance.

Seriously, though, between this and a Dirt 3 Sapphire 6950 for $190, what would you guys go for? Oced, I think the 7850 will be a similar or better value, but based on the past I think the two will reach price parity at some point.
 

WaTaGuMp

Lifer
May 10, 2001
21,207
2,506
126
Crossfire 2 of these, that should give you about 20% more ad performance

Oh man, I never thought about going Crossfire for better ad performance. Thats brilliant, should I upgrade to a 2500k and a 512 GB SSD also?
 

hansmuff

Senior member
Aug 20, 2000
611
0
71
Oh man, I never thought about going Crossfire for better ad performance. Thats brilliant, should I upgrade to a 2500k and a 512 GB SSD also?

A 2500k can only process 4 ads simultaneously. I strongly recommend a HT SKU like the 2600K or IB equivalent.
 

Cali3350

Member
May 31, 2004
127
11
81
The 7850 is one of the better cards to come out in a very long time. Right up there against GTX 460 / TI 4200 territory. It overclocks like mad at stock and gives you 7950 performance for sub 250 dollars. One of the better cards in recent memory.
 

AkumaX

Lifer
Apr 20, 2000
12,642
3
81
Oh man, I never thought about going Crossfire for better ad performance. Thats brilliant, should I upgrade to a 2500k and a 512 GB SSD also?

Agree with above poster. Get a 2600k or 3770k so you can get 8 simultaneous ads. Also, I'd say get 2 x 256gb in RAID 0 for double the ad delivery performance.
 

Pr0d1gy

Diamond Member
Jan 30, 2005
7,775
0
76
This thread went to Failtown pretty quick and seems to have blown a tire there.
 

daveybrat

Elite Member
Super Moderator
Jan 31, 2000
5,743
953
126
Here's the new deal they have going:

http://www.newegg.com/Product/Produc...82E16814150609

XFX Double D FX-785A-CDFC Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card

The Dual-fan edition for $249 w/fs.

Hmmm, i actually think the additional fan for $10 might be worth it?

Also comes with 2 free Dirt game coupons.
 

Bad Dude

Diamond Member
Jan 25, 2000
8,464
0
76
I have been working with my car too much. Need to get back into PCs again soon. I have the 6950 2GB shaders unlocked, how's that compare?
Thanks.
 

johnney5

Member
Oct 4, 2010
32
0
0
XFX Double D FX-785A-CDFC Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card

The Dual-fan edition for $249 w/fs.

Thanks for sharing this.

Here is what I've concluded about this card from reading newegg reviews and the post about this deal on slickdeals (I can't confirm the legitimacy of any of these things, I'm just sharing what I've read)

  • The clock limit of the AMD drivers is normally 1050/1450 with stock voltage, but using the latest version of TriXX software from Sapphire, it is possible to tweak the voltage to 1.3v to allow you to break that limit
  • It includes a 2 year warranty, but if you register it on the website within 30 days of buying it, your warranty becomes a lifetime warranty
  • No idea if this happens to everyone, but as per a newegg reviewer: "Cons: Experiencing stuttering issue in Diablo 3. This is Blizzard's problem and something they have not addressed at all (including zero acknowledgement) since release."
  • Mentioned by two people on slickdeals: "benchmarks show that the xfx 7850 models run hotter than msi, sapphire, asus"
  • This card requires two 6-pin power connectors, allegedly because the XFX brand uses the 7870 board. Most other brands only require one 6-pin power connector.
  • People praise this card for great performance for its price.

It has been said that these cards could all become less expensive in a few months because of factors relating to nVidia... A bit confused about that, but I think someone said that once the 600 series fills demands for all price/performance levels this will happen.
 

reallyscrued

Platinum Member
Jul 28, 2004
2,617
5
81
Thanks for sharing this.

Here is what I've concluded about this card from reading newegg reviews and the post about this deal on slickdeals (I can't confirm the legitimacy of any of these things, I'm just sharing what I've read)

  • The clock limit of the AMD drivers is normally 1050/1450 with stock voltage, but using the latest version of TriXX software from Sapphire, it is possible to tweak the voltage to 1.3v to allow you to break that limit
  • It includes a 2 year warranty, but if you register it on the website within 30 days of buying it, your warranty becomes a lifetime warranty
  • No idea if this happens to everyone, but as per a newegg reviewer: "Cons: Experiencing stuttering issue in Diablo 3. This is Blizzard's problem and something they have not addressed at all (including zero acknowledgement) since release."
  • Mentioned by two people on slickdeals: "benchmarks show that the xfx 7850 models run hotter than msi, sapphire, asus"
  • This card requires two 6-pin power connectors, allegedly because the XFX brand uses the 7870 board. Most other brands only require one 6-pin power connector.
  • People praise this card for great performance for its price.

It has been said that these cards could all become less expensive in a few months because of factors relating to nVidia... A bit confused about that, but I think someone said that once the 600 series fills demands for all price/performance levels this will happen.

Just curious, this is this a pro or a con?

Does the extra power allow higher level overclocks? I think I finally found something to replace my 4890.
 

johnney5

Member
Oct 4, 2010
32
0
0
Just curious, this is this a pro or a con?

Does the extra power allow higher level overclocks? I think I finally found something to replace my 4890.

I looked that up and found a forum post here that seems to answer that question.

The only reason you'll find 2 6-pin connectors is that the card consumes more than 150W, because the PCI-E connector can deliver up to 75W and one 6-pin connector can also deliver up to 75W. You won't ever find 2 connectors on a card that draws less than 150W.
For example, the HD4850 and the GeForce GTS250 both need less than 150W, that's why you'll find only one connector on them, where the HD4870 and the GTX260 both need more than 150W, that's why you'll find 2 connectors on them. On the other hand, you'll find one 6-pin connector and one 8-pin connector on an HD4870X2 or GTX280, because they draw more than 225W (the 8-pin connector can deliver 150W by itself).

So it has nothing to do with dividing power over as many rails as possible, it's about specs, that's all.
You see, the 720W unit above has "only" 2 rails, yet it has 2 connectors, one of which is a 8-pin connector. If it was about having one rail on each connector, it would have had at least 3 rails ('cause one 8-pin would count for two 6-pin)

After reading that, I'm still not sure if one of these adapters would work:


http://www.newegg.com/Product/Produc...82E16812198016

They said that one 6 pin can carry 75W, so it makes me wonder if splitting the one into two would mean providing less power to the card (though, after all, this xfx one is apparently no different in specs from the other brands, but it does use the board from the 7870 model).

Maybe someone else who knows more about this could confirm.
 
Last edited:

Sahakiel

Golden Member
Oct 19, 2001
1,746
0
86
They said that one 6 pin can carry 75W, so it makes me wonder if splitting the one into two would mean providing less power to the card (though, after all, this xfx one is apparently no different in specs from the other brands, but it does use the board from the 7870 model).

Maybe someone else who knows more about this could confirm.

The specification calls for minimum of 75W through one 6-pin connector. If you're unlucky, you'll get somewhere around 75W in practice. With a quality supply, you may be able to get more than 75 reliably. This is because overdesign is a standard practice to compensate for manufacturing variance and as a safety margin in case of accidental connection or user stupidity. Basically, you'd be lucky to get 150 W with no issues using that splitter you linked.

However, bear in mind that power delivery is implemented differently between designs and quickly becomes complicated with switched mode power supplies. If you're really lucky and you try to draw more than 75W using a splitter, your video card will simply refuse to boot. If you're unlucky, you will damage your video card. If you are seriously due for some bad luck, your PSU will likely meltdown and take out other components connected to it.
 
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