AMD launched their first 7000 Series cards back in December with the RX 7900 XT and RX 7900 XTX. They have also launched the lower end of their 7000 Series with the RX 7600 but the middle of the lineup has been completely missing until now. At Gamescom, AMD announced both the Radeon RX 7800 XT and RX 7700 XT to fill in some of the middle of the lineup with a focus on 1440p performance. Today I’m going to check out a few options from both GPUs but to start things off I am going to check out the Radeon RX 7800 XT reference card to get a look at the base performance the 7800 XT is capable of then we can go from there. 

Product Name: AMD Radeon RX 7800 XT

Review Sample Provided by: AMD

Written by: Wes Compton

Amazon Affiliate Link: HERE

   

AMDs new RX 7700 XT and 7800 XT

At Gamescom this year AMD announced two new GPUs to fill in a few big gaps in their current 7000 Series GPU lineup. Before the announcement, they had the RX 7600, RX 7900 XT, and RX 7900 XTX. That covered the higher end of the market with their 4K focused cards and the 7600 which is a mid-range 1080p focused card. The two new models fit in the middle with a 1440p resolution focus. While 1080p is still the most widely used resolution on Steam hardware surveys, the 1440p resolution is growing quickly, AMD highlighted this in the presentation pointing out a 44% growth year on year on the Steam hardware survey.

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To get a look at where the new RX 7700 XT and RX 7800 XT sit spec wise I have the specs from the AMD briefing as well as a full breakdown that includes the RX 7600 and RX 7900 XT which for the 7000 Series sit above and below the two cards as well as the RX 6700 XT and RX 6800 which are the comparable cards from last generation. Both the 7700 XT and the 7800 XT have the same 5nm and 6nm combination of manufacturing process that the 7900 XT has. The two GPUs have the same die size and transistor count with them sharing the same base GPU but the compute units and the stream processor counts show us that it has been cut down slightly for the 7700 XT compared to the 7800 XT. The 7800 XT is right with the 6800 in stream processors as well as compute units and ray accelerators but last generation's cards didn’t have the AI accelerators which the 7800 XT has 120 and the 7700 XT has 108. The 7800 XT has a slightly lower game GPU clock than the 7700 XT with it at 2124 MHz to 2171 MHz on the 7700 XT. The same goes for the boost clock which the 7800 XT can see up to 2430 MHz whereas the 7700 XT can do up to 2544 MHz. The single precision performance numbers give us an idea of what the lower clock speeds but higher core counts translate to. The 7700 XT can do up to 35 TFLOPS whereas the 7800 XT is slightly higher at 37 TFLOPS. The 7900 XT is way out ahead of that at 51 TFLOPS and the 7600 is well below the two at 21 TFLOPS. Then both the 6700 XT and the 6800 are well below the 7600 at 13.21 TFLOPS and 16.17 TFLOPS.

The 7700 XT has 48 MB of the 2nd generation Infinity Cache whereas the 7800 XT has 64 MB. Then for memory, the 7700 XT has 12GB of GDDR6 memory to the 16GB on the 7800 XT. They also have different memory bus interfaces with a 192-bit interface for the 7700 XT and 256-bit for the 7800 XT and the memory on the 7800 XT is also clocked faster with it running at 19.5 Gbps and 18 Gbps for the 7700 XT. Overall the higher cache and everything else translates to the 7700 XT having an effective memory bandwidth of 1995.3 GB/s to the 2708.4 GB/s for the 7800 XT. Both cards have a traditional PCIe 4.0 x16 interface, not the x8 that the RX 7600 had. Then for power, the two cards do have different total board power ratings with the 7700 XT at 245 watts and the 7800 XT at 263 watts. AMD also announced the base pricing of the cards at Gamescom with the RX 7700 XT at $449 and the RX 7800 XT at $499. The 7800 XT is available in a reference design directly from AMD as well as designs from their partners but the 7700 XT doesn’t have a reference design and will only be available with the partner designs.

Specifications

RX 7600

RX 6700 XT

RX 7700 XT

RX 6800

RX 7800 XT

RX 7900 XT

Architecture

RDNA 3

RDNA 2

RDNA 3

RDNA 2

RDNA 3

RDNA 3

Manufacturing Process

6nm

7nm

5nm GCD + 6nm MCD

7nm

5nm GCD + 6nm MCD

5nm GCD + 6nm MCD

Transistor Count

13.3 Billion

17.2 Billion

28.1 Billion

26.8 Billion

28.1 Billion

57.7 Billion

Dia Size

204 mm²

335 mm²

200mm² GCD

150mm² MCD

520 mm²

200mm² GCD

150mm² MCD

529 mm²

Compute Units

32

40

54

60

60

84

Ray Accelerators

32

40

54

60

60

84

AI Accelerators

64

--

108

--

120

168

Stream Processors

2048

2560

3456

3840

3840

5376

Game GPU Clock

2250 MHz

2424 MHz

2171 MHZ

1815 MHZ

2124 MHz

2025 MHz

Boost GPU Clock

Up to 2655 MHz

Up to 2581 MHz

Up to 2544 MHz

Up to 2105 MHz

Up to 2430 MHz

Up to 2394 MHz

Peak Single Precision Perf.

Up to 21 TFLOPS

Up to 13.21 TFLOPS

Up to 35 TFLOPS

Up to 16.17 TFLOPS

Up to 37 TFLOPS

Up to 51 TFLOPS

Peak Half Precision Perf.

Up to 43 TFLOPS

Up to 26.43 TFLOPS

Up to 70 TFLOPS

Up to 32.33 TFLOPS

Up to 74 TFLOPS

Up to 103 TFLOPS

Peak Texture Fill-Rate

Up to 339 GT/s

Up to 413 GT/s

Up to 550 GT/s

Up to 505.2 GT/s

Up to 583 GT/s

Up to 804 GT/s

ROPs

64

64

96

64

96

192

Peak Pixel Fill-Rate

Up to 169 GP/s

Up to 165.2 GP/s

Up to 244 GP/s

Up to 202.1 GP/s

Up to 233 GP/s

Up to 459 GP/s

AMD Infinity Cache

32 MB (2nd Gen)

96 MB (1st Gen)

48 MB (2nd Gen)

128 MB (1st Gen)

64 MB (2nd Gen)

80 MB (2nd Gen)

Memory

8GB GDDR6

12GB GDDR6

12GB GDDR6

16GB GDDR6

16GB GDDR6

20GB GDDR6

Memory Speed

18 Gbps

16 Gbps

18 Gbps

16 Gbps

19.5 Gbps

20 Gbps

Effective Memory Bandwidth w/AMD Infinity Cache

Up to 476.9 GB/s

Up to 1278.0 GB/s

Up to 1995.3 GB/s

Up to 1664.2 GB/s

Up to 2708.4 GB/s

Up to 2900 GB/s

Memory Bus Interface

128-bit

256*bit

192-bit

256-bit

256-bit

320-bit

PCIe Interface

PCIe 4.0 x8

PCIe 4.0 x16

PCIe 4.0 x16

PCIe 4.0 x16

PCIe 4.0 x16

PCIe 4.0 x16

Total Board Power

165W

230W

245W

250W

263W

300W

Launch MSRP

$269

$479

$449

$649

$499

$899

 

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Alongside of the two new cards, AMD also announced their FidelityFX Super Resolution 3 which brings frame generation to AMD cards. Unlike DLSS from Nvidia AMD has this as an open standard so it can not only work with all of AMDs cards, but it can also work with Nvidia cards as well. FSP 3 with upscaling can work with AMD cards back to the RX 590 and Nvidia 10 Series cards but that doesn’t include frame generation. For that, you will need an AMD 5700 or better and RTX 20 Series or higher. They showed off the performance differences that you can see with Forspoken from Square Enix where they were able to go from 36 FPS up to 122 FPS at 4K by using FSR 3 performance mode. FSR 3 has a list of upcoming games and game support of course will make or break this as a feature. The performance is great, but if none of the games you play support It, well that doesn’t help at all. FSR and FSR 2 have 300 games with current or upcoming support so if that is any indication. They also have combined Radeon Boost, Anti-Lag+, and Super Resolution on the driver side into one feature they are calling Hyper-RX which helps make getting better performance easier, with that they showed off some performance improvements you can see with average FPS improving and latency dropping by big margins in all of the games shown.

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AMD also touched on the streaming capabilities as well on their call. Highlighting AV1 support which is the future of streaming. AV1 can get you higher quality while lowering the bandwidth needs. They also touched on AMDs noise suppression which can help cut out background noise from your microphone.

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With the RX 7700 XT and RX 7800 XT hitting stores tomorrow September 6th, the cards are also timed to launch the same day as Starfield which utilizes AMDs technology. AMD is also offering a copy of the game to anyone who picks up the 7700 XT or the 7800 XT. This is a great way to add some value to the cards and also make sure everyone has access to a brand new game to check out how your new cards can perform.

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Before getting into testing I did also run GPUz to double-check that our clock speeds matched up with the specifications. The Radeon RX 7800 XT that I am checking out right now is AMDs reference design so it’s no surprise that it is sitting at the reference 2430 MHz for the boost clock and 2124 MHz for the default clock speed. This does also document the driver I tested on which is the Adrenalin 23.20.01.05 driver that AMD sent out ahead of the launch and it documents the BIOS revision as well.

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