AMD RV770 refresh -> RV790

You can never check the number of transistors anyway so you have to rely on what the manufacturer wants to tell you. We can guess the number is similar to RV770. We can also get numbers from AMD marketing and sales documents. They are out there since 1 or 2 months and easy to get if you have the proper contacts. Then we can get numbers in the press documents. Does that mean these are the real figure ? Maybe the guy writing that document didn't know either and presumed it was the same as before.
 
Legions hardware "simulates" the 4890 by overclocking a 4870 to the 4890 specs and finds it wanting, also coming to the opposite conclusion about GTX 275.

The Radeon HD 4870 has always been the king of value, not performance, and with 1GB cards selling for as little as $190 US, this has never been truer. The Radeon HD 4890 threatens the great value of the Radeon HD 4800 series, as it delivered just 5-6% more performance while priced at around 25% more. It was disappointing to find that in so many tests the Radeon HD 4890 was just a few frames per second faster than the original.
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Again this is something we will be looking at shortly. For now it appears that for the most part the GeForce GTX 275 has a decent performance advantage over the Radeon HD 4890. Out of the seven games tested the Radeon HD 4890 was only found to be faster in two of them.
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Of course, they assume there have been no internal improvements, and also dont have the new drivers.
 
Seems like an attempt from Legion Hardware to get some early easy hits before the official launch.... :rolleyes:

I assume they didn't get a HD4890 from AMD to write an official review? And even so... They could've gotten a HD4890 at many places already to write a 'proper' review with a real RV790.
 
CJ said:
Seems like an attempt from Legion Hardware to get some early easy hits before the official launch.... :rolleyes:

I assume they didn't get a HD4890 from AMD to write an official review? And even so... They could've gotten a HD4890 at many places already to write a 'proper' review with a real RV790.
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Yeah, that's what makes me wonder though. Maybe they do have a 4890 and know what it benches, but just didn't want to get in NDA trouble with ATI. Just one possible thought.

I think it's a good idea though. I was wondering like two weeks ago why a site didn't do this. Even if it's wrong it's still entertaining.
 
Sampsa Kurri posted at Muropaketti that he got an update from AMD on RV790 changes, he had previously posted of course the news regarding Burst Memory Reads support, and the way he just posted that he got an update on changes seemed rather excited, so there's definately more to it than just the Burst Memory Reads support
He said that the changes will be covered in detail in his RV790 article

Sadly for us, Sampsa is one of those who does honor the NDAs, so there won't be more details on it from him.
 
At the $180 - $280 range, we are going to ask our readers to wait until the end of this week to make a decision. If you want a little more power than the 4870 1GB / GTX 260, but you don't want to spend the money required to push up to the next price point, we might have something (or two somethings) for you.

$180 - $280 Recommendation: Almost There ... Stay on Target (Wait a few more days)

I wish we could talk about this a little more now, but all will be clear by the end of the week.
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Derek Wilson from Anandtech's Video Card Buyer's Guide - Spring 2009.
 
Wow, looks like overclocked it is topping the 285..

quite an impressive deal at 230-ish (hopefully to fall further). New ti-4200/9800 pro confirmed?

Nvidia must have known exactly how the card would perform some time ago. Looks like the 275 will be right there with it. And the 275 is such a high performer encroaching on the 285, I'm sure Nvidia wouldnt have done it unless theyd known. If they though 4890 was a 10% overclock, they wouldnt have bothered.

Some improvements of stock 4890 on 4870 1GB based on the benches at highest res of 2560X1600+4XAA+8XAF
Crysis=22%
Far Cry 2=32%
COD4=16%
HAWX=9%
UT3=50%

Average=25.8%

I'm not sure how that German site can justify giving the card only an 84% when they say themselves that overclocked it equals a 285..for a card that will street price for $120-ish less at launch..
For negatives they say it's not much faster than a 4870 at 1680X1050 and seem to mention that the cooler is loud.
 
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Hmm, we still don't know how the RBE configuration of RV740 (in HD4750/70 form) manages to keep up with RV770 (HD4850) despite having less bandwidth. We don't even know what RBE configuration RV740 has.

Now we're seeing what looks to me like a similar "enhanced RBE" effect in HD4890.

Alternatively, maybe there's more L2 cache?...

What else can I say to cover all bases? :p

Why did they run the HAWX tests in D3D10.0 not 10.1?

Jawed
 
AnarchX said:
But probadly the 9.4b driver is also an important factor here...
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Pictures says plain 9.3.
But looks quite impressive, and not even on a super fast system (3ghz QX6850, PC2-800).

Jawed said:
Why did they run the HAWX tests in D3D10.0 not 10.1?
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They just have both for comparision for 4890..
Is UE3 particulary RBE dependent?
 
Rangers said:
Some improvements of stock 4890 on 4870 1GB based on the benches at highest res of 2560X1600+4XAA+8XAF
Crysis=22%
Far Cry 2=32%
COD4=16%
HAWX=9%
UT3=50%

Average=25.8%
Click to expand...

Although it is great to see high resolution scores, they end up meaning very little to the average user.

Most people are at 1680 x 1050 or less. 1920 x 1200 is starting to get some traction finally.
 
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