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HD 4770 or HD 4850

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April 28, 2009 5:12:52 PM

So I can finally make a decision to get a video card since I've been waiting for the 4770. I've checked out several reviews including Tom's. Safe to say that it clearly smokes the 4830 and it gets close to the 4850. My thought is, why should people buy the 4770 when the price is so comparable with the 4850. If it was $99, might be an easier decision, but it came out at $109 ($10 MIRs are a complete scam, lol). You can get a 4850 or GTS 250 for $10-20 more. If you were really tight on a budget, the choice is obvious. I'd rather starve for dinner/lunch one day and get the 4850, but that's just me. The only area 4770 shines is power consumption, but if you have a decent PSU like most gamers, doesn't seem that big of a deal. Anyways, any thoughts would be great, thanks.

More about : 4770 4850

a c 169 U Graphics card
April 29, 2009 1:06:38 PM

OP,What resolution do u play at ?
Related resources
April 29, 2009 5:01:26 PM

Just get the 4850. And Psycho, could you post similar Vantage screenies?
April 29, 2009 5:27:41 PM

rags_20 said:
Just get the 4850. And Psycho, could you post similar Vantage screenies?


Yah, looks like I'm gonna order the 4850. Thanks.

a b U Graphics card
April 29, 2009 8:50:24 PM

If you offered me a choice between a 4770 and a 4850 for free, I'd take the 4770. Why? Because it's cooler, consumes less power and if you overclock both then there will only be one winner.

Also, by the looks of things it crossfires a bit better than any other card we've seen so far.

On your starving point, why not apply that for another day and get a 4870? ;) 
April 29, 2009 9:10:27 PM

If both are OCed, the 4850 wins.
a b U Graphics card
April 29, 2009 9:31:43 PM

jennyh said:
If you offered me a choice between a 4770 and a 4850 for free, I'd take the 4770. Why? Because it's cooler, consumes less power and if you overclock both then there will only be one winner.



Yeh, but the tradeoff is the 4850 performs better.

And if you overclock both, the 4850 will win hands down.

April 29, 2009 10:00:23 PM

The 4770 has a much more efficient dual-slot cooler, but can that make up for the 20% hit in SP and TMU? If the average 4850 can hit 750Mhz, then the 4770 would need to OC to 938Mhz to compete (theoretically) which would amount to a 188Mhz OC (25%). Numbers, and just for argument's sake.
a b U Graphics card
April 29, 2009 10:07:40 PM

The average 4850 cant hit 750. It's more like 690.
April 29, 2009 10:17:26 PM

I ordered the sapphire HD 4770. It was only $99 on amazon. Just have to wait now. :( 
April 30, 2009 2:29:29 PM

jennyh said:
The average 4850 cant hit 750. It's more like 690.

That would be equivalent to an HD 4770 at 828Mhz. Thanks for the correction, I just pulled a number out of thin air for hypothetical purposes.
April 30, 2009 8:15:00 PM

KyleSTL said:
That would be equivalent to an HD 4770 at 828Mhz. Thanks for the correction, I just pulled a number out of thin air for hypothetical purposes.


In Tom's review, they overclocked it to 830/850 MHz:

Quote:
With stock clocks of 750/800 MHz as our reference point, we settled on a stable 830/850 MHz combination of frequencies in 3D mode, maxing out ATI's Overdrive utility


Im sure they could have gotten more if they had used a overclocking utility other than Overdrive.
It looks like the 4770 wins the overclocking battle.
May 1, 2009 2:43:23 AM

The biggest issue on the HD 4770 is bandwidth. Memory overclock needs to be higher than 850 (Yes, I know they didn't really push it).
a c 130 U Graphics card
May 1, 2009 10:15:08 AM

boudy said:
In Tom's review, they overclocked it to 830/850 MHz:

Quote:
With stock clocks of 750/800 MHz as our reference point, we settled on a stable 830/850 MHz combination of frequencies in 3D mode, maxing out ATI's Overdrive utility


Im sure they could have gotten more if they had used a overclocking utility other than Overdrive.
It looks like the 4770 wins the overclocking battle.



They only stopped at 830/850 as thats the Max the overdrive will go to. In other words the software stopped them overclocking further. Bit tec took the effort to push it further.
http://www.bit-tech.net/blog/2009/04/29/overclocking-th...

Mactronix
a b U Graphics card
May 1, 2009 10:33:11 AM

That's without a voltage increase as well so 0.95v and this chip is more than comfortable at 1.2v. I'm pretty sure you'll see 1ghz on these with decent cooling.
May 1, 2009 10:43:05 AM

Can anyone recall how well the 4850 overclocks? Just to compare both overclocked (how I think I would run either if I got one :D )
a c 130 U Graphics card
May 1, 2009 1:59:44 PM

Well as some of you know i have one but im not overclocking it untill i have some officially suported drivers that work properly.

Mactronix
May 1, 2009 3:40:42 PM

jennyh said:
That's without a voltage increase as well so 0.95v and this chip is more than comfortable at 1.2v. I'm pretty sure you'll see 1ghz on these with decent cooling.



How do you know it's comfortable at 1.2v? This is on 40nm, and there's nothing else on 40nm. I'm just curious where this information came from.
May 1, 2009 5:44:32 PM

You know what? You don't always have to get what's newest, better to get what is best. The 4850 is better IMHO. Even with an 800MHz GDDR5, it can't come close to the 4850's bandwidth.
May 1, 2009 6:26:45 PM

rags_20 said:
You know what? You don't always have to get what's newest, better to get what is best. The 4850 is better IMHO. Even with an 800MHz GDDR5, it can't come close to the 4850's bandwidth.

They are nearly identical on bandwidth since GDDR5 is quad pumped, not dual like DDR3.
May 2, 2009 4:30:51 AM

If it's memory is put to 993Mhz like the 4850 they'll have the same bandwidth.

And the memory seems to overclock fairly well (It's actually severely under-clocked).
May 2, 2009 7:59:31 AM

Quad or dual, we mainly compare using bandwidth. 4850 - ~64GB/s 4770 ~51 GB/s
a c 130 U Graphics card
May 2, 2009 8:27:08 AM

I think the point is that you can overclock a 4770 to have the same bandwidth as a 4850 and when you do the 4770 beats the 4850.
No one is saying the 4850 is a bad card all of a sudden but for power usage/value and performance. the 4770 takes a hell of a lot of beating.

Mactronix
May 2, 2009 12:43:41 PM

It is not fair to compare 2 cards when one is overclocked and the other is not. And that's an OC to 1000MHz you're talking about. The 4850 can OC to 70+GB/s

@above poster, cooler and low temp. are the same thing, don't add more stuff just coz you think the 4770 is better and it offers lesser performance. Oh and its not THAT much cooler than the 4850. Mine gets 60C at load, 40C idle. 65C load @ 1075/700
a c 130 U Graphics card
May 2, 2009 1:06:43 PM

You are the one who started on about measuring using bandwidth. Which really has nothing to do with the fact that the 4770 is capable of standing toe to toe with your beloved 4850 even before its clocks have been touched.
This is the conclusion from a bit tec review http://www.bit-tech.net/hardware/graphics/2009/04/28/am...

I can post more that say the same if you like ? As i said no one is saying the 4850 is suddenly a bad card by any means, its just all in the 4770 is better. And thats before we even have drivers that support the card.
So why dont you stop trying to defend the card just because you have one and stick to facts. The 4770 if you like it or not is all things considered a better performing card than the 4850 however you want to break down the performance. Im not saying its faster just better performing for what it is. And remember its doing this with less resources(SP's etc) than the 4850 has.

Mactronix
a b U Graphics card
May 2, 2009 4:41:52 PM

The 4850 isn't a bad card, it's just a bit overpriced now.

Where the 4850 should always have a better memory bandwith when overclocked, the raw speed of the 4770 should be enough to swing the benchmarks in it's favour in most games.

There isn't a whole lot between them, so it just makes sense to go with the cheaper and less power hungry card.
May 4, 2009 7:31:28 PM

As of today (5/04/09) you can get a 4770 (PowerColor) or 4850 (MSI) for $89.99 at newegg (with rebate)! Bandwidth wise the 4850 will outperform the 4770. Get two 4850s and Crossfire them. Do it now, I know you want to. Don't know how long this deal will last. Good deals are over for the 4870s so they've gone back to their inflated price. You could almost get two 4850s for the current pricing of a OC'd 4870.

!