It is not a secret anymore that Radeon R9 Nano will launch on Thursday. What remained secret however, were the exact specifications of this new Fiji-based graphics card, but this is about to change.
AMD Radeon R9 Nano comes with 4096 unified cores
The R9 Nano, the miniature version of the Fury X, which does not ship with external water cooling, will be released in two days. It was believed that R9 Nano could actually feature the very same GPU as Fury X, Fiji with 4096 Stream Cores. The leaked datasheet confirms this information. What’s surprising is that the engine clock is reported as ‘up to 1000 MHz’. That’s much more than we expected, however that’s definitely not the base clock, but theoretical maximum boost speed this card could achieve under very strict power requirements.
And when I say strict I mean really impressive power reduction. Let me remind that Fury X has TDP of 275W (which of course does not necessarily translate into power consumption). The R9 Nano has TDP 100W lower than Fury X (175W to be exact) but we knew this already.
What is spectacular is that Nano has 175W WITH 4096 CORES. Never before has such a small graphics card had so many cores. Mini-ITX builders are probably already rubbing their hands, because now they have the chance to make something not only small, but also powerful.
Other confirmed specs include 4GB HBM memory across 4096-bit interface clocked at 500 MHz (thus 512 GB/s bandwidth). Fiji with 256 TMUs and 64 ROPs (so just like Fury X) and impressive maximum single-precision computing performance of 8.2 TFLOPs.
Meanwhile DGLee leaked some new pictures. Now we have a better look in all possible angles, and even a glimpse what’s under the hood. All components have been squeezed very close to each other, some removed (one 8pin power connector) and some reduced (two power phases). The card has the same display connectors as Fury series (HDMI + 3x DisplayPort).
For comparison, here’s R9 Fury series PCB (via):
The Radeon R9 Nano should end up close to GeForce GTX 980. In fact we even have a slide from Hot Chips presentation (posted by TPU) which confirms just that (yeah I know it has a typo).
Radeon R9 Nano could be a direct competitor to GTX 980, with performance above R9 390X and TDP of 175W (GTX 980 has TDP of 165W). The only difference is that GTX 980 is not offered in such a small form factor. So which card should you get? I think it also means R9 Nano price tag will be very close to GM204-based model.
| AMD Radeon R9 “Fiji” Series (August 26th) | ||||
|---|---|---|---|---|
| AMD Radeon R9 Fury X2 | AMD Radeon R9 Fury X | AMD Radeon R9 Fury | AMD Radeon R9 Nano | |
 |  |  |  | |
| Launch Date | Autumn 2015 | June 24th | July 10th | August 27th |
| GPU | 2x Fiji XT | Fiji XT | Fiji PRO | Fiji |
| Compute Units | 2x 64 (128) | 64 | 56 | 64 |
| Stream Cores | 2x 4096 (8192) | 4096 | 3584 | 4096 |
| TMUs | 2x 256 (512) | 256 | 224 | 256 |
| ROPs | 2x 64 (128) | 64 | 64 | 64 |
| Computing Power | ~17 TFLOPs | 8.6 TFLOPS | 7.2 TFLOPS | 8.2 TFLOPS |
| Core clock | TBC | 1050 MHz | 1000 MHz | 1000 MHz |
| Memory Clock | 500 MHz | 500 MHz | 500 MHz | 500 MHz |
| Mem. Clk Effective | 1000 MHz | 1000 MHz | 1000 MHz | 1000 MHz |
| Memory Bus | 2x 4096 (8192)-bit | 4096-bit | 4096-bit | 4096-bit |
| Memory | 2x 4GB (8GB) HBM1 | 4GB HBM1 | 4GB HBM1 | 4GB HBM1 |
| Bandwidth | 2x 512 (1024) GB/s | 512 GB/s | 512 GB/s | 512 GB/s |
| TDP | >375W | 275W | 275W | 175W |
| Power Connectors | 2x 8pin | 2x 8pin | 2x 8pin | 1x 8pin |
| MSRP | TBC | 649 USD | 549 USD | TBC |
Source: IYD.KR
Many thanks to iLeakStuff for the tip!
