Difference between ESP32-WROVER and ESP32-WROVER-B

prdinesh
Posts: 1
Joined: Tue Dec 18, 2018 6:35 pm

Difference between ESP32-WROVER and ESP32-WROVER-B

Postby prdinesh » Tue Dec 18, 2018 6:41 pm

What is the difference between ESP32-WROVER and ESP32-WROVER-B modules?

Does ESP32-WROVER-B has more PSRAM than ESP32-WROVER?

ESP_Lvxinyue
Posts: 33
Joined: Fri Dec 25, 2015 6:13 am

Re: Difference between ESP32-WROVER and ESP32-WROVER-B

Postby ESP_Lvxinyue » Wed Dec 19, 2018 8:34 am

prdinesh wrote:
Tue Dec 18, 2018 6:41 pm
What is the difference between ESP32-WROVER and ESP32-WROVER-B modules?

Does ESP32-WROVER-B has more PSRAM than ESP32-WROVER?
Hi,

They both have 8 MB PSRAM. ESP32-WROVER has PSRAM that operates at 1.8 V and can support up to 144 MHz clock rate.
ESP32-WROVER-B has PSRAM that operates at 3.3 V and can support up to 133 MHz clock rate. ESP32-WROVER-B is also available with custom flash sizes of 8 MB or 16 MB. More variants can be found here: https://www.espressif.com/sites/default ... ion_en.pdf.

Thanks.

ESP_Sprite
Posts: 2761
Joined: Thu Nov 26, 2015 4:08 am

Re: Difference between ESP32-WROVER and ESP32-WROVER-B

Postby ESP_Sprite » Wed Dec 19, 2018 9:38 am

Note that for ESP32 use, the maximum clock rate does not really matter as the ESP32 does not interface with external memories at speeds over 80MHz.

fivdiAtESP32
Posts: 47
Joined: Thu Dec 20, 2018 9:47 am

Re: Difference between ESP32-WROVER and ESP32-WROVER-B

Postby fivdiAtESP32 » Mon Dec 24, 2018 12:25 pm

ESP_Lvxinyue wrote:
Wed Dec 19, 2018 8:34 am
prdinesh wrote:
Tue Dec 18, 2018 6:41 pm
What is the difference between ESP32-WROVER and ESP32-WROVER-B modules?

Does ESP32-WROVER-B has more PSRAM than ESP32-WROVER?
Hi,

They both have 8 MB PSRAM. ESP32-WROVER has PSRAM that operates at 1.8 V and can support up to 144 MHz clock rate.
ESP32-WROVER-B has PSRAM that operates at 3.3 V and can support up to 133 MHz clock rate. ESP32-WROVER-B is also available with custom flash sizes of 8 MB or 16 MB. More variants can be found here: https://www.espressif.com/sites/default ... ion_en.pdf.

Thanks.
I'm not sure if this is always true. For example, I have an ESP-WROVER-KIT V3 with an ESP32-WROVER module that only appears to have 4MB of PSRAM. I also have an ESP-DevKitC V4 with an ESP32-WROVER-B module which has 8MB of PSRAM.

In menuconfig "Component config > ESP32-specific > SPI RAM config > Type of SPI RAM chip in use" there are three options:
- (X) Auto-detect-
- ( ) ESP-PSRAM32 or IS25WP032
- ( ) ESP-PSRAM64 or LY68L6400

The fact that there are options for 4 MB (ESP-PSRAM32) and 8 MB (ESP-PSRAM64) indicates to me that there are modules with 4 MB of PSRAM and the ESP32-WROVER on my ESP-WROVER-KIT V3 appears to be one of these modules.

ESP_Lvxinyue
Posts: 33
Joined: Fri Dec 25, 2015 6:13 am

Re: Difference between ESP32-WROVER and ESP32-WROVER-B

Postby ESP_Lvxinyue » Wed Dec 26, 2018 8:59 am

fivdiAtESP32 wrote:
Mon Dec 24, 2018 12:25 pm
ESP_Lvxinyue wrote:
Wed Dec 19, 2018 8:34 am
prdinesh wrote:
Tue Dec 18, 2018 6:41 pm
What is the difference between ESP32-WROVER and ESP32-WROVER-B modules?

Does ESP32-WROVER-B has more PSRAM than ESP32-WROVER?
Hi,

They both have 8 MB PSRAM. ESP32-WROVER has PSRAM that operates at 1.8 V and can support up to 144 MHz clock rate.
ESP32-WROVER-B has PSRAM that operates at 3.3 V and can support up to 133 MHz clock rate. ESP32-WROVER-B is also available with custom flash sizes of 8 MB or 16 MB. More variants can be found here: https://www.espressif.com/sites/default ... ion_en.pdf.

Thanks.
I'm not sure if this is always true. For example, I have an ESP-WROVER-KIT V3 with an ESP32-WROVER module that only appears to have 4MB of PSRAM. I also have an ESP-DevKitC V4 with an ESP32-WROVER-B module which has 8MB of PSRAM.

In menuconfig "Component config > ESP32-specific > SPI RAM config > Type of SPI RAM chip in use" there are three options:
- (X) Auto-detect-
- ( ) ESP-PSRAM32 or IS25WP032
- ( ) ESP-PSRAM64 or LY68L6400

The fact that there are options for 4 MB (ESP-PSRAM32) and 8 MB (ESP-PSRAM64) indicates to me that there are modules with 4 MB of PSRAM and the ESP32-WROVER on my ESP-WROVER-KIT V3 appears to be one of these modules.
Hi,

ESP32-WROVER module integrated 4 MB of PSRAM before. It was about in June that 4 MB PSRAM was replaced with 8 MB version. I believe there are still previous versions of dev boards with 4 MB PSRAM module out there.

Who is online

Users browsing this forum: No registered users and 11 guests