Nvidia shook things up with the performance of their first Ada-based card, the RTX 4090, but for a lot of people, that level of performance isn’t needed or is out of their price range. Things start to get interesting as we start to see the rest of the product stand fill out over time. Nvidia announced two RTX 4080 models alongside the RTX 4090 but later “unlaunched” the 12GB model leaving just the RTX 4080 16GB as the one 4080 model and today is the day. The embargo’s lifted and we can finally check out how the RTX 4080 performs ahead of it launching in retailers tomorrow morning. So today I’m going to check out the RTX 4080 Founders Edition and see how it compares with the RTX 4090 as well as last generation's cards. Let’s dive in!

Product Name: Nvidia RTX 4080 Founders Edition

Review Sample Provided by: Nvidia

Written by: Wes Compton

Amazon Affiliate Link: HERE

 

What's the RTX 4080 All About

I dove into some of the details of the Ada architecture for the RTX 4090 launch and I don’t think we need to get into those details. Be sure to check out our RTX 4090 Founders Edition review for more information there. But I did want to at least take a look at what sets the RTX 4080 apart from the RTX 4090 that we previously took a look at. I also put the specification listing together with the RTX 3080 and RTX 3080 Ti that the RTX 4080 is replacing. From the 4090 to the 4080 the big change is the RTX 4080 is not running on the same AD102 GPU that the RTX 4090 was on, it is on the AD103 which takes the transistor count from 76.3 Billion to 45.9 billion but that is still well above the 28.3 Billion of both of the RTX 3080 cards. This drops the graphics processing cluster count from 11 down to 7 and with that, the texture processing clusters are going from 64 to 38 and streaming multiprocessors from 128 to 78. That same change can be seen in the CUDA cores which the RTX 4080 has 9728 which is nearly half of the 16384 of the RTX 4090. Things get interesting when we compare those same numbers with the 3080 Ti which has more TPCs, SMs, and CUDA cores. It even has more Tensor and RT cores but the RTX 4080 has the newer 4th gen Tensor cores and 3rd Gen RT cores.

Where the RTX 4080 stands out from the 3080 and 3080 Ti is its GPU boost clock speed which can boost up to 2505 MHz, nearly the same as the RTX 4090 compared to 1665 MHz on the 2080 Ti. The memory clock speed is cranked up as well at 1400 MHz which is higher than the RTX 4090 even. But the big downside is the RTX 4080 has a memory interface that is 256-bit whereas the 3080 was 320-bit and the other two were 384-bit. The higher clock speed gives a higher memory data rate at least. Even with the higher memory clock speed, you can see how the interface limits things in the total memory bandwidth, even with 16 GB of memory. The RTX 4080 also has a huge jump in L2 cache like the 4090 compared to the older cards.

It is built on the same TSMC 4 nm Custom NVIDIA Process that the RTX 4090 was built on which helps and the TGP or total graphics power of the card is 320 watts whereas the 4090 was 450 watts. This puts it in line with the RTX 3080 in power and lower than the RTX 3080 Ti. Even so, it does come with a three 8-pin dongle where those two cards both came with dual 8-pin adapters.

Specifications

RTX 3080

RTX 3080 Ti

RTX 4080

RTX 4090

Graphics Processing Clusters

6

7

7

11

Texture Processing Clusters

34

40

38

64

Streaming Multiprocessors

68

80

76

128

CUDA Cores

8704

10240

9728

16384

Tensor Cores

272 (3rd Gen)

320 (3rd Gen)

304 (4th Gen)

512 (4th Gen)

RT Cores

68 (2nd Gen)

80 (2nd Gen)

76 (3rd Gen)

128 (3rd Gen)

Texture Units

272

320

304

512

ROPs

96

112

112

176

Boost Clock

1710 MHz

1665 MHz

2505 MHz

2520 MHz

Memory Clock

1188 MHz

1188 MHz

1400 MHz

1313 MHz

Memory Data Rate

19 Gbps

19 Gbps

22.4 Gbps

21 Gbps

L2 Cache Size

5 MB

6 MB

64 MB

72MB

Total Video Memory

10 GB GDDR6X

12 GB GDDR6X

16 GB GDDR6X

24 GB GDDR6X

Memory Interface

320-Bit

384-bit

256-bit

384-bit

Total Memory Bandwidth

760.3 GB/s

912 GB/s

716.8 GB/sec

1008 GB/s

Texture Rate (Bilinear)

465.1 GigaTexels/second

532.8 GigaTexels/second

761.5 GigaTexels/second

1290.2 GigaTexels/second

Fabrication Process

Samsung 8 nm 8N

NVIDIA Custom Process

Samsung 8 nm 8N

NVIDIA Custom Process

TSMC 4 nm

NVIDIA Custom Process

TSMC 4 nm

NVIDIA Custom Process

Transistor Count

28.3 Billion

28.3 Billion

45.9 billion

76.3 Billion

Connectors

3 x DisplayPort

1 x HDMI

3 x DisplayPort

1 x HDMI

3 x DisplayPort

1 x HDMI

3 x DisplayPort

1 x HDMI

Form Factor

Two Slots

Two Slots

Triple Slot

Triple Slot

Power Connectors

1x16-pin

(Dongle to 2x 8-Pins)

1x16-pin

(Dongle to 2x 8-Pins)

1x16-pin

(Dongle to 3x 8-Pins)

1x16-pin

(Dongle to 4x 8-Pins)

Minimum Power Supply

750 Watts

750 Watts

750 Watts

850 Watts

Total Graphics Power (TGP)

320 Watts

350 Watts

320 Watts

450 Watts

Maximum GPU Temperature

93° C

93° C

90° C

90° C

PCI Express Interface

Gen 4

Gen 4

Gen 4

Gen 4

Launch MSRP

$699

$1199

$1199

$1599

 

Before getting into testing I did also run GPUz to double-check that our clock speeds match up with the specifications and it does have the 2505 MHz boost clock speed. This also documents the BIOS revision of our card and the driver I used for testing which is the 526.72 driver that Nvidia provided to press before the launch.

image 32

 

 

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