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AMD 390X Review

Caporegime
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http://www.guru3d.com/articles-pages/msi-radeon-r9-390x-gaming-8g-oc-review,1.html


'When the AMD Radeon R9 290X was released, it finally had architectural improvements over the 7970 that increased the GCN version a bit. However, that was back in 2013 that the AMD Radeon R9 290X codenamed (Hawaii) was released. So here we are two years later, and basically we are getting a re-brand of Hawaii with the R9 390 and 390X. This time, no architectural improvements.



What does that mean as far as performance and specs go? Well if you look above at the specifications for the AMD Radeon R9 390X above (the one we are reviewing today) you will note it shares all the same specifications with the AMD Radeon R9 290X. Both the AMD Radeon R9 290X and AMD Radeon R9 390X are built at 28nm, have 2816 Streaming Processors, 176 texture units, 64 ROPs and 44 Compute Units. Both utilize 512-bit memory busses with GDDR5.



There are only three things that separates the R9 390X from the R9 290X. The first thing is a higher default stock GPU clock speed of 1050MHz versus 1000MHz on the R9 290X. The second is that the memory is clocked a lot higher this time around at 6GHz versus 5GHz on the AMD Radeon R9 290X. This brings the memory bandwidth up to 384GB/sec versus 320GB/sec. Finally, the R9 390X will come standard with 8GB of VRAM versus 4GB on the R9 290X.'

So 4GB Vram and an overclock..........

AMDMatt also said their are some efficiencies improvement and tight timings on the memory as well as higher speed and more.
 
Associate
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24 Nov 2010
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Im using the 15.20 drivers and no card not flashed, the inf is just modded.

Just run 3dmark firestrike. Total score went from 14109 to 14599 but more importantly the gfx score went from 21735 to 22792, a 9.1% increase!

I suspect a lot of the positive gains from the 3 series cards in reviews over their equivalent 2 series is purely down to the new drivers.

There is even better to come with the 15.30 drivers so AMD claim!

If i can get a 9% increase in games as well then all is good. I am beating some titan tx which are overclocked now in the ocuk 3dmark database! :eek:

There has been uplift across the board for 2xx and 3xx on 15.15 ... the Hardware Info NL review used 15.15 for all the AMD cards.

The 3xx (390X particularly) clearly has more going on than just higher memory clocks (= more bandwidth) and another 4GB. It's hugely faster than a 970 all round, now, and demolishes the 980 at higher resolutions in a lot of titles, and comes damn close to the 980ti at higher resolutions in some titles. Furthermore, the frame times have dropped a lot .. it's only being beaten by the Titan X and 980ti now in almost all titles. We knew GCN likes bandwidth, but this looks like a lot more than just that.

Despite the attempts of various sites and individuals to pour cold water on this launch as rebrands which offer negligible improvement, the combination of a few hardware tweaks and major driver improvements seem to have resulted in top performance at very good price points. Certainly if people actually realise how fast they are, after penetrating the FUD, 970 and 980 prices will have to come down very significantly. NVIDIA isn't really looking very good at ANY price point at as of now***.

***Except for the huge own goal with no HDMI 2.0 for 4K TVs.
 
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Associate
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Not sure why we have two threads on this, but from reviews the 390X looks very impressive.

Edges the 980 at 1440p and higher, and does so while using less power than the 290X and produces less heat.

It's a shame the card isn't slightly lower priced since its a re-brand but I think its a solid purchase. The MSI 390X in particular is really impressive for me at £350.
 
Soldato
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Soldato
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I know the paper specs are the same, how about reading what I linked to? The overclock and extra ram arnt the reason for improved tessellation performance. Nor does your link comment on gcn variation.

GPU Specification Overview
AMD Radeon R9 290X AMD Radeon R9 290 AMD Radeon R9 390X MSI R9 390X Gaming 8G OC
Shader Processors 2816 2560 2816 2816
Texture Units 176 160 176 176
ROPs 64 64 64 64
Core Clock 727MHz 662MHz - -
Boost Clock 1000MHz 947MHz 1050MHz 1100MHz
Memory Clock 5GHz GDDR5 5GHz GDDR5 6GHz GDDR5 6.1GHz GDDR5
Memory Bus 512-bit 512-bit 512-bit 512-bit
Memory 4GB 4GB 8GB 8GB
FP64 1/8 1/8 1/8 1/8
Transistor Count 6.2B 6.2B 6.2B 6.2B
Manufacturing Process TSMC 28nm TSMC 28nm TSMC 28nm TSMC 28nm
Architecture GCN 1.1 GCN 1.1 GCN 1.1 GCN 1.1
GPU Hawaii Hawaii Hawaii/Grenada Hawaii/Grenada
Launch Price $549 $399 $399 TBA

And what about the clock for clock test they did when they lowered the 390X to the same clock as the 290X, they had identical scores in all the games tested. As I said just extra vram with an overclock.
 
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Soldato
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And what about the clock for clock test they did when they lowered the 390X to the same clock as the 290X, they had identical scores in all the games tested. As I said just extra vram with an overclock.

Its GCN 1.1 but they may have improved it without changing the GCN version, as Greebo has already posted. Also as I said in my original post....


It doesnt seem to be GCN 1.1

http://www.hardocp.com/article/2015/06/18/msi_r9_390x_gaming_8g_video_card_review/3#.VYMmMlVVhBf

Hardocp reporting the large tessellation performance of the GCN 1.2. I suspect Drivers are the cause of its middling performance so far. Not enough to swap from a 290x but it seems like more of a refresh than a straight rebrand to me.

It might be the driver difference on the 390x in the Hardocp test (15.15) compared to when its tested on 15.5 by other sites. Which Greebo's results make it look like and what the mixed bag of results (from identical to 10/20% difference) across reviews seems to indicate.
 
Caporegime
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There is the NL sire which used 15.15 drivers for both 290x and 390x and the 390x beats the 290x by 1 or 2 fps in each test and thats all.

And thats probably due to the slightly higher clocks.

But at least it shows great performance for both 290x and 390x.

Just wish AMD could have given 290x owners these drivers months ago
 
Soldato
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There is the NL sire which used 15.15 drivers for both 290x and 390x and the 390x beats the 290x by 1 or 2 fps in each test and thats all.

And thats probably due to the slightly higher clocks.

But at least it shows great performance for both 290x and 390x.

Just wish AMD could have given 290x owners these drivers months ago

Agreed it does seem daft. I hope they officially release them in the next Beta to none 3 series users.
 
Permabanned
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lol @ AMD... absolute idiots... for the last few years they have only won market share from NVidia because they have been price/performance competative.

Fewer features, worse support and lack of usable multi-card performance... for the same price as NVidia?

They're obviously desperate, but they've gone the wrong way. They need to undercut... not price gouge... they will sell less and make less total... idiots!
 
Associate
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6 May 2011
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Milton Keynes
I suspect they will make a fair bit from uneducated people buying 8GB 390s, on the basis that it has 8GB of memory, which is obviously more than almost all the nvidia cards...
 
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