There was a gap as big and deep as the Pacific Ocean between the Radeon RX 7900XT and the Radeon RX 7600, so the RX 7900 GRE was nothing more than a rarely found alibi card. AMD took its time with the Navi32, probably also for resource reasons, and now wants to push itself ahead of NVIDIA’s GeForce RTX 4070 and the long-tested RTX 4060 Ti, which has to struggle with acceptance problems as a 16 GB variant because the price was simply not right. Even though NVIDIA has now adjusted the prices a bit, the cage is eagerly waiting for the fighters today and of course a result. Or several, depending on how you look at it.
Important preface
Today I’m testing two RX 7800XT and 7700XT each, whose orientation and layout are quite different from each other. And I think it’s a pity that AMD intentionally doesn’t have an MBA card of the RX 7700XT in the program, although it would have been an easy thing to do, because the boards are all the same except for one less voltage converter. Economic constraints? The MBA design is elaborate and good, I can certainly spoil that. That customers wouldn’t buy something like that is an urban legend. That you don’t want to bother with the OEM as much (Vapor Chamber Gate) and hardly earn anything from the cards is more plausible then.
Of course, as usual, there are many benchmarks, the comprehensive teardown, a very elaborate board and cooler analysis with some reverse engineering, a material analysis with my new lab equipment as well as the analysis of power consumption and load peaks including a suitable power supply recommendation. Since I know that many colleagues will also repeat all the technical details including theory, which have already been presented in various tidbits, I’ll spare myself that today and just briefly refer to the already known slides and the short presentation of the two cards with the most important details. After all, you want to see real figures today and not PR fireworks. We already had that recently.
Navi32 in a short overview
AMD’s Navi 32 GPU is manufactured at TSMC in a 5nm process (GCD, 5N FinFET) or in a 6nm process (MCD, N6 FinFET), which again points to a MCM design. A total of 4 chiplets (Navi31 with 6) lie on the now square packag and the 346 mm² total area of the interposer carries a GCD with around 200 mm² and four MCDs with 36.6 mm² die area. Thus, the complete Navi32 has been given to the midrange and even leaves a gap to the considerably slower RX 7600. A Radeon 7700 without XT or an RX 7600XT would easily find room here, because the jump is still much too big. But we’ll just wait and see, after all, the price structure still has to consolidate to some extent. The table actually shows the filled and the still open gap very clearly.
| Radeon RX 7900 XTX |
Radeon RX 7900 XT |
Radeon RX 7900 GRE |
Radeon RX 7800 XT |
Radeon RX 7700 XT |
Radeon RX 7600 |
|
|---|---|---|---|---|---|---|
| Architecture | RDNA 3 | RDNA 3 | RDNA 3 | RDNA 3 | RDNA 3 | RDNA 3 |
| Chip Name | Navi 31 XTX | Navi 31 XT | Navi 31 XL | Navi 32 XT | Navi 32 XL | Navi 33 XL |
| GPU Design | Multi-Chiplet | Multi-Chiplet | Multi-Chiplet | Multi-Chiplet | Multi-Chiplet | Monolith |
| Process Node | TSMC N5 TSMC N6 |
TSMC N5 TSMC N6 |
TSMC N5 TSMC N6 |
TSMC N5 TSMC N6 |
TSMC N5 TSMC N6 |
TSMC N6 |
| Compute Units | 96 | 84 | 80 | 60 | 54 | 32 |
| Shader Units | 6.144 | 5.376 | 5.120 | 3.840 | 3.456 | 2.048 |
| RT Accelerators |
96 | 84 | 80 | 60 | 54 | 32 |
| AI Accelerators | 192 | 158 | 160 | 120 | 108 | 64 |
| Memory | 24GB GDDR6 20 GT/s |
20GB GDDR6 20 GT/s |
16GB GDDR6 18 GT/s |
16GB GDDR6 19.5 GT/s |
12GB GDDR6 18 GT/s |
8GB GDDR6 18 GT/s |
| Interface | 384 bit | 320 bit | 256 bit | 256 bit | 192 bit | 128 bit |
| TBP | 355 W | 315 W | 260 W | 263 W | 245 W | 165 W |
| MSRP | 999 USD | 899 USD | 649 USD | 499 USD | 449 USD | 269 USD |
AMD sees the new cards in direct competition with NVIDIA’s GeForce RTX 4070 and RTX 4060 Ti 16 GB, which can of course also be found in the slides (see link below). Where this ends up in reality in the benchmarks, we will of course find out for ourselves today. As a reminder, we would like to show you the product presentation once again:
AMD fills the gap and also releases the unicorn: Radeon RX 7800XT and RX 7700XT flanked with FSR3
With that, the first page is done and we are slowly preparing for the test. But stop! There are four cards today, and I’ll quickly introduce you to them on the next page – it’s worth it!
- 1 - Introduction and overview of Navi32
- 2 - The cards from AMD, Sapphire and XFX at a glance
- 3 - Test system and the igor'sLAB MIFCOM-PC
- 4 - Teardown: PCB and components
- 5 - Teardown: Cooler and surprising material analysis
- 6 - Gaming-Performance in Full-HD (1920 x 1080)
- 7 - Detailed Metrics for Full-HD (1920 x 1080)
- 8 - Gaming-Performance in WQHD (2560 x 1440)
- 9 - Detailed Metrics for WQHD (2560 x 1440)
- 10 - Details: Power consumption and load balancing
- 11 - Load peaks, capping and PSU recommendation
- 12 - Temperatures, clock rates and infrared analysis
- 13 - Fan curves and operating noise
- 14 - Summary and conclusion
167 Antworten
Kommentar
Lade neue Kommentare
Urgestein
1
Urgestein
Urgestein
Urgestein
Mitglied
Urgestein
1
Mitglied
Veteran
Urgestein
Veteran
Veteran
Mitglied
Urgestein
Veteran
Veteran
Urgestein
Alle Kommentare lesen unter igor´sLAB Community →