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No I have the m290x which I can compare but I can try and match some of the m295x results from the benchmarks thread

OK it has just arrived and I am now starting the bootcamp install

You're about to post benchmarks for the AMD Radeon R9 M395 graphics processor with 2GB of GDDR5 memory in the late 2015 iMac 27", yes?

Looking forward to seeing them :)
 
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I have preordered an iMac with the M395X but I picked up the highest config I could get at the Apple Store which included an M395. I ran my go to benchmark which is Unigine 'Valley' benchmark with the custom settings of Extreme HD.

LFWLvLA.png


For comparison, here are the last three generations of iMac I have done the same test with:
2HNCxn6.png


dx7vkMi.png


MuSVrvU.png


Obviously CPU comes in to play at some point but to how much I cannot say. To compare this here are the results from my Mac Pro which has a much weaker CPU and a much stronger GPU:

oC4rVat.png
 
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@topgunn, That's very interesting, thank you. Could you also post a screenshot of the GPU-Z app and any other benchmarks you can lay your hands on (3DMark, FRAPS, Cinebench (can also be run from OS X).

Also, when are you due to get your fully optimised riMac (4.0GHz quad-core Intel Core i7 & R9 M395X with 4GB of GDDR5)?
I am not at the machine at this time. I'll hope to play with it more tonight.

My iMac is still at processing items so I do not have a firm date but the estimate is Oct 26. If the M395X is nothing more than a M395 with 2GB of RAM, which I am suspecting it is, I will cancel my order.
 
If the M395X is nothing more than a M395 with 2GB of RAM, which I am suspecting it is, I will cancel my order.

Thanks. I understand why you would feel that way after the disappointing M395 results (I wonder if the Bootcamp drivers have been updated for the new GPUs yet), but someone needs to find out if that's correct or not. Hopefully there'll be some reviews of the fully specced model before the 26th and you'll be able to make a decision then...
 
well it looks like the 395 has 10% less shaders than the m295x so I expect the m395x will have the same shaders as the m295x but a slightly higher clock
 
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M380 = Cap Verde based Strato Pro, 128-bit bus. This is a boosted, higher clocked version of M370X.
M390 = unknown, new. Maybe it is same as M390X (Tonga) on PC's, but lower clocked.
M395 = Tonga based Amethyst XT, 256-bit bus. Seems to be under clocked version of 395X.
M395X = Tonga based Amethyst XT, 256-bit bus

This is based on AMD's PC releases and might not go hand in hand with Mac. Especially M395 (M390X in PC's) and M395X, which in PC world differs mostly by the amount of VRAM. M395X should have 8GB, M390X 4GB. So here too Apple is counting pennies and cut few gig's of memory in order to make 800% profit for 2GB vram expansion.

If you are worried about throttling, only i7 4.0GHz can cause problems. It's hotter than previous Haswell chips. All i5 chips are a lot cooler than previous versions.

UPDATE: M390 is a Pitcairn, 256-bit bus. M395 is Tonga Pro and M395X is Tonga XT.
 
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27 iMac Retina (8GB 3TB FD) i5 3.5GHz M290x vs 3.3GHz M395 for gaming (Wolfenstein The new order, Alien Isolation... etc) ?
Is it worth the extra USD 380 (RM1576) to buy the new iMac (cancel the current order M290x) ?
 
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M395 will be much faster than M290X. Comparable pretty much to M295X.
M395 has 2gb vram - M295X had 4gb in the last iMac. Are they really still comparable? If so you just saved me some decent $$
 
It depends really on what you are doing, but in terms of raw GPU performance - they are. Other thing is will you will run out of VRAM at that resolution? You can, that is true, but there is also system RAM for that occasion.
 
M395 will be much faster than M290X. Comparable pretty much to M295X.

Check the benchmark thread....
I'm running windows 10 with the bootcamp drivers, and my results aren't too far off ninja2000's results.

Here's what I'm thinking:

m295x/D700: 2048 shaders
m290x/D300: 1280 shaders
D500: 1536 shaders
m395: 1792 shaders

m395x probably has the "full set" of 2048. Would be interesting to see a comparison between the top of the line BTO imacs.
 
The marketing departments of AMD and Apple would like you to think that.

Hey Jerwin, looking at your valley score it is neigh on the same as the 395. Have you got any other games/benchmarks you can run so we can compare?
Can you run 3dmark11/13?
 
Hey Jerwin, looking at your valley score it is neigh on the same as the 395. Have you got any other games/benchmarks you can run so we can compare?
Can you run 3dmark11/13?

Are any of those benchmarks both free and informative? Steam wants $25 for its version.
 
they are both free through steam, just use the demo version. I have added another load of benchmarks in my other thread. I do have a m290x iMac but unfortunately I recently wiped my bootcamp partition, I may install windows again if I get time then I can do a comparison
 
The marketing departments of AMD and Apple would like you to think that.
So in your mind, 1280 GCN core GPU with the same amount of RAM is faster or on par with 1792 GCN core GPU with higher RAM clock and 16 MHz lower clock core?

By the looks of things M395 is close to M295X. Even compute power will be higher on M395. 2.2 TFLOPs vs. 3 TFLOPs.

By the look of 3dMark FireStrike score it is 10% slower than GTX 970M.

Definitely not a 5K resolution gaming card. But for up to 1080p, 1440p in some games it will do really well.
 
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